What is Slip-arse?
1.
A term that describes the act of sliding the penis provocatively up and down the arse of a fit
"Hey, you horny bitch... 'you up for a slip-arse?!"
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1.
The act of two men sharing a two headed dildo in their anal cavities.
BF and Chris were totally AAing (double-A-ing) with that monster ..
1.
when your doing a girl missionary on the beach and you take your penis and slap it in the sand a couple of times and then put it back in..