A potential partner that isn't attractive and requires at least a six pack to have intercourse with.
John hooked up with a sixer upper last night... She looked like a yeti.
by Hellz1117 August 23, 2008
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Derived from "Fixer Upper". A potential mate that typically falls below standards of attraction, but with a 6 pack is attractive.

"She's alright, but that mole on the face makes her a sixer upper"
by Hellz1117 July 15, 2008
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Generic, bland, white, yuppie, American band music, typical of jukeboxes in pubs on Manhattan's Upper East Side and Turtle Bay areas. The songs are well known, the bands are well known, but which song goes to which band is difficult to determine.
My friend Rob likes a lot of Upper East Side Rock and thinks its awesome.
by TMT75 June 1, 2011
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Perform an upper decker whilst your best friend shits in the bowl part of the toilet

15+ years friendship recommended, but not requires
"Why were you both in the bathroom?"

"We just best friend upper deckered that bitch"
by Badbtchfr April 11, 2022
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This means to have an interest in someone who is older than you or someone who is in a year above you
"Kurt used to be my upper school crush"
by Biggiereds June 22, 2023
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When a phish show is so bad, someone jumps from the top tier head first into the audience.
"Brah, are they playing gotta jiboo again? Gawd I'm gonna smoke some sourD then take an Upper Decker'
by MomoDanceSkunkPusky October 18, 2021
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When you take a dump in a toilets tank
Dude: im going to take an upper decker in burger kings toilet.

(Dude upper decks BK)
Later someone takes a piss and flushes toilet: what the!
by mountain high mush September 13, 2014
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