bumping buddy 

Good friend you are having sex with.

I'd like you to meet K. She's my bumping buddy.

bumping buddy by Davidornado December 7, 2014

biddy bumping

The act of running into biddies at top speed in attempt to bother them, resulting in either you or the biddy toppling to the ground.

"Ah, see that biddy over yonder?"
"Indeed I do"
"I'm going to go biddy bumping, by forcefully running into her."
"How bothersome you are!"

biddy bumping by rabbitrabbitrabbit February 4, 2010