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1.
the act of a man sticking his "thingy" in a chicks shitter if he's one lucky son of a bitch for havin a mrs that lets him get away with that sorta thang !!

God intended for women to take it up the arse avery once in a while or he never woulda put the 2 holes that close together that us blokes could make the mistake in the first place
Wendy: i think my arse grapes are playing up again
Snarfy: nvm, let me do you up the wrongun n poke em back in with my "thingy"
by Snarfy June 07, 2009
62 11
 
2.
A description of anal sex, which has links with the west country region of the United Kingdom.
Can also be used when being downgrading to certain induviduals.
Last night Brenada was so horny that she made me flip her over and take her up the wrong'un!
He's so ugly I think he must of been conceived up the wrong'un!
by jgk232 March 03, 2005
14 3
 
3.
Anal sex. From 'up the wrong one' in reference to the anus as opposed to the vagina.
She takes it up the wrong'in
by JC October 19, 2004
12 3