dirty slipper 

This happens when when you hook up with a girl at her house or apartment. After sexy time, you take dump in one of her slippers. The next morning when she puts on her slippers, you yell, "DIRTY SLIPPER!" and smack her in the face, then run out of the house screaming and laughing.

"Dude, I gave Jen the dirty slipper lat night!"
"Wow man, that's pretty damn gross."

dirty slipper by steve-n-craig January 21, 2014

Grandpa's Dirty House Slipper 

Grandpa's Dirty House Slipper, in keeping with the definition of House Slipper, is the act of an elderly male homeowner engaging in unprotected anal sex with a male residential services provider, i.e., home health aid, lawn care worker, maid, plumber, cable guy, in exchange for the worker to provide free or extra services.

Howard needed his lawn mowed and the shrubs trimmed around his yard. However, his social security check only stretched so far and he could not afford to pay for those services. Therefore, Howard availed himself to sex and performed a Grandpa's Dirty House Slipper with a young male lawn care worker mowing the yard of his neighbor's home. Howard ended up with neatest yard and the best groomed shrubs in the whole community.

Grandpa's Dirty House Slipper by Eaton Holgoode April 26, 2014

dirtslippers 

A coating of dirt that welfare children get on the bottoms of their feet. Usually because mom doesn't believe in cleaning the house.

When I walked into that trailer all 10 of that bitch's kids had dirtslippers

dirtslippers by dirtyd79 April 17, 2006