when you grab someone in the muscles right above their knee on the right and left sides while they aren't expecting it. it can be very shocking. almostorgasmic.
(you cant do it to yourself, so dont even try)
The sexual act of placing your shaft in the area between your partner's upper and lower leg (this area is known as the 'legpit' or 'legbow') and then using the area to have sex with. This can accomplished be in a one-on-one situation but is usually reserved in a group sex or gangbang setting where all other areas of traditional sex are taken.
Since Jackie had every hole filled and she was jerking off two other guys my only option was to femur fuck her.
Femuary is like movember but for women. We don't shave our legs, armpits, etc.. for all of Feburary. The reason? to bring about the awareness that women don't actually need to shave. Hair is natural. If men don't shave their faces, the consequences are minimal.. Maybe they will have difficulty getting a job or picking up girls. If women don't shave their legs, everyone stares. Why is that? Hair is natural. Let yourself be free for Femuary!
"Why are there so manyhair girls lately!?"
"Because it's Femurary!"