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8.
When a man has recently finished a night (or day) of ravenous sex with a woman, he removes his filled condom and slips it into the woman's purse surreptitiously. She will be in for a surprise when she next opens it!
When Swillis went to pay the bill at dinner, she realized that Glandy has given her a party favor, and that all of her money was soaked with jizz!

Jill--God damnit, Zachy P gave me the party favor, i am such a fucking idiot!
by zackhye October 14, 2009
 
9.
Some one of either sex that intentionally gets inebriated to have an excuse to be promiscuous, sexually explorative, or to simply get laid.
Man I heard Jack got so drunk tonight he left with a dude. What a party favor.
by ooRoBoToo January 24, 2011
 
10.
A party favor is a girl who sleeps with a lot guys she meets at parties.
Jennifer slept with two guys at the same time after she had just met them at a party, she is such a party favor.
by Scott December 15, 2003
 
11.
A party favor is a girl who sleeps with a lot of guys that she meets at parties.
Did you hear that Wendy fucked both of those guys at the same time after she had just met them at a party,she is such a party favor.
by Scott December 15, 2003
 
12.
Chicks who think about sex the same way guys do at parties.
Where can I meet those two party favors, Jennifer and Wendy?
by Monster Me! June 19, 2005
 
13.
Contrary to grab bag sacks of goodies and crap given out at parties of prepubescent youth, party favors are benevolent actions done by one party reveler to another.
By giving out pizza and beer and allowing women to take off their tops, Brandon was the king of doing party favors for his fellow
by Mr. Fuel March 23, 2007
 
14.
N. Diarrhea;The runs; mudpiles; see also: hershey squirts
I ate 6 beef burritos from Taco Bell last night and had party favors all morning.

Marsha, Marsha, Marsha! Get out of the bathroom NOW, because Bobby's got party favors!

Imagine if the girl in the twogirls1cup video had party favors? Actually, let's not think about.
by Helluva February 19, 2009