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The process of sticking your penis into your dog's anus, until you feel a tiny bulge in the pouch of the dog. You then proceed to slap it like it is a potato.
Jon H: Yeah man, I was slappin' the potato with my dog last night!

Ryan: No way dude!
by JDGersdorf May 02, 2006

Words related to slappin' the potato

anus henriks jon potato slap slappin