This is when you titty fuck a female and bust a nut on her chin, so the nut drips off her chin forming a white beard.
by hoto March 7, 2005
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A non-Jewish Middle Eastern-American who bends over backwards to prove how American he is. Derived from "Uncle Tom."
Mo's indie rock friend #1: Did you see Mo get all weird when we introduced him to that hot Syrian chick?
#2: I know, as soon as she asked him what "Mo" was short for, he turned as red as a twice-used maxi pad.
#1: For real! I had to tell her it was short for "Mohamed."
#2: When will he realize "Mo" is the toupee of all nicknames?
#1: (scoffs) I love him more than I love Guided By Voices, but he's such an Uncle
Sam.

Exeunt
by Self-Hating Hipster July 27, 2005
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Where you cum onto a girls face but only on the chin so she has a white beard.
Where cum lands on someones face to where they look like they have a white beard like Uncle Sam.
by MaddhatterCrow March 6, 2016
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Taking feshafide (shitty) underware and putting them on someones head while they are resting.
One night when I was wasted at a college party, after mak'n lov' to this skanky ho i gave her a uncle sam
by samsonite July 21, 2003
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When two individuals have sexual intercourse in the cowgirl position at the base of the Lincoln Memorial while waving several American flags.
"Nothin' says God Bless America like a good ole Uncle Sam Slam!"
by M-Chill December 22, 2012
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Want to got to Uncle Sam’s club at Buckley AFB this weekend?
by Munstadi May 27, 2018
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