Quote Originally Posted by AntiochusIII
If "crazy" also includes mental problems, then yes.

One guy likes to talk about (my God the first time I met him I didn't know he was crazy; he kept talking to me continuously throughout the class and all I could do was "uhuh" "umm" "what?(feigned surprise)" "cool" and other such generic responses) all sorts of crazy stuff all the time. He kept talking about how he hated the Catholic church (something about they're evil) and he likes to talk about Lucifer (the Devil) and such. Funny--but his condition is actually quite dangerous: he cut himself several times, if not more.

Strange that I would befriend such a guy and continue to be friendly with him, considering my usual social awkwardness and the aloof, "genius, shy, amiable" kid air I usually radiate. [Warning - impression and truth are different things, like the descriptions in the quotations above]
I could give my - religiously inspired - answer, but this is not the backroom.