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1.
Pignudging is the act of lifting, or nudging aside, the small, pig-like buttocks of a female with an over-sized arse in order to engage in doggy-style sex.
Man 1 - I was having sex with this girl last night and her arse cheeks were so big I had to move them aside to get in.

Man 2 - Ha, ha, you pignudger, you.
by Sir Mixalot the Second October 22, 2007