I think I am going to start eating peanut butter near my friend even though he is allergic to peanuts.
Isn't this something that could be dangerous to your friend?
He could die from anaphylaxis
If he is that allergic, you should not eat things that could cause an allergic reaction. It is not okay to do that intentionally.
I'll eat it on the back of his head and yell out for him to test it.
This sounds like a terrible idea. He may end up really getting hurt if you do something like this and he will need his epi pen immediately.