Dying while engaging in sexual intercourse, usually by heart attack.
Yeah I hit twelfth base last night. The funeral will be held this Saturday and the cops are still after me.
by ljfox4 March 3, 2009
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12 July.
A time when prods get very bitter, dertoy ther neighbourhood and send their children out to cause roits.
Hmmm, very clever! NOT!
by davis longfellow June 6, 2003
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Steve: Man I fucked Katie so hard last night that she died while cumming.

Aneesh: Really, twelfth base? How was her funeral?

Steve: I got to thirteenth base at it.
by Steve from Canada (1) February 5, 2010
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A play by William Shakespeare involving a drunk guy, a pirate, a girl pretending to be a eunuch, another girl who has a thing for eunuchs, an idiot, a stuck-up puritan, and an emo clown. It contains lesbian and gay undertones and has some sweet insults. Best thing ever.
"If music be the food of love, play on!" - Twelfth night, I.i
by Romanshoes September 1, 2007
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The worst play written by Bill Shakespeare. Rushed and generally boring from start to finish - anyone having to perform this drivel will surely kill themselves.
Lecturer: We'll be performing Twelfth Night in three weeks time...
*Students make a little effort to read it (because none have even looked at this demi-play before), but only get to the end of act one because it's so dull and unfunny*
Student 1: Group suicide?
All students: Sure.

by TCC - 2011 February 3, 2011
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