A funny fuck occurs when a bro declares, at least a week in advance, that he will fuck an offensive looking female for the lulz. His bros cannot make fun of him for it since he declared it ahead of time, but they can totally laugh with him the next morning.
-Dude, I was totally gonna make fun of Chris for hooking up with that jappy sorostitute
last night but then I remember that e-mail, from a while back, when he said he was gonna fuck her for shits and gigs.
-Yeah man, we've been hurting for a funny fuck.