asprin knees 

the act of putting holding an asprin between both leggs and holding the asprin in place by adding pressure from both knees to hold it inthe middle. usually done so at events such as parties, get togehters, or anytime there is alcohol drugs or a hot guy you would like to screw.
perferably done by women

jill-"karen lets practice asprin knees ya??"
karen-"whats that??"
jill-"keep this asprin between ur legs. that way the boys can't find a way between them and i know ur not knocked up."

asprin knees by concerned citizen :) November 25, 2009

Aspirin between the knees 

Implies that if a woman were to suspend an aspirin between her knees, she would be unable to spread her legs without dropping the aspirin, thus, by keeping the aspirin suspended between her knees, she would be unable to engage in activities deemed sinful by crazy out-of-touch right wing nut jobs who wish to impose their religious will on the American public

Person 1:

"Hey! Did you see that Rick Santorum supporter Foster Friess on TV the other day? That nut job actually suggested that women should suspend an aspirin between the knees and use that as contraception!"

Person 2:
"Man, that guy is out of touch! I guess we can thank right wing nutters like those guys for paving the way to Obama's second term..."

Aspirin between the knees by phroug2 April 15, 2012

Aspirin between my knees

To make some phenomenal gaffe or faux pas, similar to putting your foot in your mouth.

Man, I really put the aspirin between my knees yesterday. I told Jen that her new dress made her look fat.

Aspirin between my knees by Two Hep Cats April 19, 2012