Slip Dogg 

When you tell someone something important as a secret and they casually bring it up in conversation without thinking, with the person(s) that should not know in the room with you

If you secretly tell your friends you have a girlfriend and your parents don't know as the uptight bastards may try to keep you from her until they think you are "ready" for that kind of committment.

You and your buddies are sitting around your house just chilling and your mom walks in asking what you are doing tonight and your friends casually make fun of you and asking, "Are you gonna leave us for your GIRLFRIEND?"

You then say, "What are you talking about slip dogg?"

Your mom then says, "Everyone out NOW!" and then you proceed to put your story on FML.com

Slip Dogg by Richard from the Gym July 14, 2009

slip dogging 

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"

slip dogging by UHPIKE September 6, 2007

slipdogging 

When a man slides his penis between his partner's buttocks cheeks, but does not penetrate. Similar to "titty-fucking," but instead involving the butt cheeks.

Brad didn't feel like penetrating, so he decided to try slipdogging instead

slipdogging by Laura from Ohio January 27, 2006