Title text: XKCD presents a guide to numerical sex positions:
69 
[[traditional sixty-nine position, mutual oral sex]]
99 
[[sort of a standing doggy-style position]]
71 
[[girl is bent over a table]]
34 
Guy: Uh. 
[[guy and girl look confusedly at each other]]
8^(1
2) 
Narrator: Guys? 
[[guy and girl are staring blankly at each other]]
ln(2 pi) 
Narrator: Aww, c'mon... 
[[girl begins walking away]]
{{title text: We didn't even get to the continued fractions!}}