When you are in a sistuation with two or more hot girls, and you can not identify the hotter girl or whichone you would sleep with.
Dave: Look at all these hot chicks!

Steve: Which one would you sleep with?

Dave: All of them.

Steve: Yeah, but if you had to pick just one.

Dave: ... (Coitus Conundrum)
by Bagseven May 20, 2010
Get the Coitus Conundrum mug.