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anal sex, and the prelude to an amusing rhyme which kids at school write on each others textbooks to get their friends in trouble:
up the bum, no harm done!

additions:
with a thumb, twice as fun!
with ya mum, watch me cum!
by me old fruity September 30, 2006
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Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
via giphy
by ecogoth December 30, 2020
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3
when michael takes random people (e.g his father) up the bottom
by Anonymous April 01, 2003
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4
The ramming of aerodynamic and not so arodynamic objects up the hrmm... anus
Everybody goes to take michael's mum up the bum while he watches in dispair.
Then he decides to go take some tall dark and hansome man up the bum in a dark alleyway, allllll night long. Bless his little gay soul
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