grey (in background): ahh! a spider!
yellow: hey dude, we need to leave
red: why, you scared of spiders?
yellow: no, i'm phobiaphobic. i'm scared of people with phobias. we gotta go.
red: wait, so, if you are scared of people with phobias, shouldn't you be scared of... yourself?
yellow: huh? wait, what?!
red: oh. no. forget what i said
yellow: nope, can't. recursing. infinitely scared. my phobia is severely flawed