Pump your pecker in and out of a girls ass cheeks.
1. get a stiffy.
2. compress her ass cheeks.
3. insert your stiffy between cheeks.
4. pump stiffy in and out of cheeks.

Note: lubricating the cheeks facilitates pump action. "its like titty fcuking but with her ass cheeks". alternative to penetration.

"If she doesn't have big tits then try slip dogging"
by UHPIKE August 30, 2007
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Yoga pose performed while intoxicated that incorporates a wide stance.
Mia didn't need that last Jameson. She's in slipping dog pose at the end of the bar.
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Kissing while gradually falling to the ground with continually spreading legs.
Tina was so drunk Friday she was slopping slipping dog kisses on that dude outside the bar.
by Dave Kurkpatrique February 8, 2014
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