I don't know. But if you ask me, that sounds like just the sort of question a Reptilian Shape-shifter would ask.

Just sayin.

Personally, I would move away from the friendship since this seems to be getting toxic. I would nicely tell him what you said here - that you have seen his development and you are not comfortable with what he is taking as truth, and then I would tell him for that reason you don't feel you can be around him anymore. And then actually move on.

If you don't want to take that step, then start getting him into websites that offer him intelligent and skeptical takes on myths/conspiracies. I don't know many, but a few I've used before:

For urban myths:

http://www.snopes.com/

For political stuff:

http://www.factcheck.org/

Chain emails and such:

http://www.truthorfiction.com/

For religion:

http://skepticsannotatedbible.com/

And maybe buy him this book:

http://www.amazon.com/People-Believe-Weird-Things-Pseudoscience/dp/0716733870

Yeah, the trouble is that when someone is part of a group that claims to be victimized, any rational challenge (or even a small disagreement) closes them off further. It's "proof" that they (and their special group, whether it be bigfoot enthusiasts or creationists) are truly under attack by a biased "Science" cabal (or secret gov't forces, or the illuminati, or whomever). The conspiracies and the persecution create this self-feeding loop, and it's hard for your words to break through.

There's a real lack of basic scientific literacy in this country (says the girl who did some thesis work on evolution & creationism in US schools). Many Americans have a basic sense of fairness, so presenting ideas like "teach both sides" appeals, and the basic misunderstanding of what a scientific THEORY is means that folks arguing "it's just a theory" gain traction. But that's a side-rant of mine. (http://ncse.com/  is a great resource on this topic, for those who care). Exploiting this misunderstanding of how science works, it's easy to point to one weird anomoly and extrapolate an entire conspiracy theory around it. Many folks forget/don't understand that science is cumulative and that one stray data point doesn't discount hundreds of years of research. And then spreading vicitm-culture and paranoia with excuses such as “the reason our findings aren't published in scientific journals is because THEY don't want you to know the truth” just strengthens the believers ardor. Argh! (Shit, if someone actually showed up with a bigfoot corpse, or if those GhostHunters TV shows actually found proof of ghosts, it'd be published as widely as possible) I don't really have some great solutions for you.

A susceptibility to all of these theories, and the ensuing paranoia, could possibly be signs of some chemical issues in the brain/mental illness (as suggested by others here). Again though, as he doesn't think there's a problem, and these are mostly harmless conspiracies, not sure there's much you can do, unless HE were to seek help (we probably all have some type of mental issues. It's just those that manifest with violence or destruction that seem to get treated). The fact that he freaked out about your possible Reptillian-ness is a bit concerning, though. Seems he's maybe spiraling deeper down the rabbit hole. And the Reptillian conspiracies are crazy, and could lead a motivated believer to violence against one of these suspected powerful bloodsuckers. Yikes! Be sure to TRUST YOUR INSTINCTS here. If he ever does anything that makes you feel uncomfortable or worry about your safety, TRUST THAT and remove yourself. You don't even have to cut off all ties, but maybe only meet in public places after that.

You can definitely get to a place where you agree to disagree and just make certain topics "off limits." I've reached similar agreements with some pals who have rabidly right-wing political views. We have just stopped talking about it, as it gets so toxic. But we are still friends and hang out. If he is so entrenched in these beliefs that they are ALL he wants to discuss and they color all that he does, then you might be in a situation where you have to distance yourself from the friendship. Which sucks. What a rotten/silly reason to have to lose a friend, but it sometimes happens.

But, for your OWN information, I can provide some links. http://www.skepdic.com/ is a nice resource. Definitions and explanations of lots of what's out there

http://skepchick.org/ Lots of blogging fun. Haven't spent much time on the site, but several of the writers were a part of the SkeptiCal conference in California this year

And an ad on skepchick just now led me to http://skepticsonthe.net/ In truth, I don't think sending/sharing any of this info with your friend will help, but you might find it useful/entertaining for your own use.

Good luck!! (lord knows I've had my own fights about this with a sibling. She's whip-smart in everything else. And even I've had an enjoyable dabble in cryptozoology. I love reading about all that crap, & thought her interest was mostly for entertainment value, although I knew she believed more than I do. So I thought she'd LOVE this amazing video of Dr. Eugenie Scott (one of my science heroes) talking about bigfoot from a scientific perspective. Dr. Scott is super respectful of true believers, and poses some interesting questions about population size and genetic health, geography, etc. But at the beginning of the video, she mentions that some folks believe sasquatch is magical (can disappear, time travel, etc), and that Science (BY DEFINITION) doesn't deal with the supernatural, so that her talk wouldn't focus on those theories. She then gave an hour long talk on the possiblities and sightings of an undiscovered primate/hominid. But my sister got stuck on that supernatural thing, and ended up screaming at me (as the official representative of "Science," apparently) that Science should spend more looking for mystical things and studying ghosts. *Headdesk* That video can be found here  for those who care. So while my interest in loch ness monster et al has been for fun, hers has become fanatical. *shrug* We just don't talk about it anymore, as it ends with her yelling at me)

It sounds like he's taking the train to crazy town. Does he have family in the area? I think he needs a psych eval.

It will probably be hard for you to get him to go - but a family member might be able to help.

It might be safer for you to step away from this relationship a bit. He may become violent if he thinks you are a threat.

You might say "I really think you are a great person and I have tons of respect for you. But I'm worried because I feel that I'm loosing you. I just don't understand your interest in these things that seem so far fetched to me."

Do this when he's calm and lucid. And if he freaks, then you have your answer...time to let him go.

Good luck!

I'm really not qualified to say this, but i think you should speak to a counselor or psychologist about getting him an evaluation. If he TRUELY believes you might have been a shapeshift due to an eye color change, it sounds like a mental illness masquerading as a fanatical interest in "information over the internet".

I hear elements of schizophrenia in what you related, but I'm really not qualified to make the assessment. Find someone who is. This guy sounds like he needs help or an intervention.

Get a large magnet-- Leave it on top of his harddrive for a bit. Give him a pet bunny trained to chew through wires. and otherwise UNPLUG the poor basterd.