Bum Slide 

When one slides their bare bum cheeks across the bare bum cheeks of an unsuspecting person during a post game locker room shower.

"I just got Paul with a good bum slide. He didn't see it coming."

Bum Slide by just pooed a little December 5, 2012

Nova Scotia Slide Bum 

A physical characteristic that afflicts a disproportionate number of women in the Canadian province of Nova Scotia. Its primary quality is a flatness of the buttocks that is so extreme that the tops of the thighs appear to slide into the shoulder-blades without significant outward interruption.

He: Look, there's Bob's really cute girlfriend. She's from Halifax, Nova Scotia.
Friend: Yea, she's cute alright, but she's got Nova Scotia slide bum.
He: Yikes! Now that she's turned sideways, I see what you mean: she's got practically no ass at all!

Nova Scotia Slide Bum by ring-tailed roarer September 11, 2009

Slide-bum 

Very serious and not funny painful medical condition.
Injury obtained from improper use of children's play equipment.

Hows the slide-bum? Still cracked?

Slide-bum by miscuzi July 11, 2021

Side Bum 

Similar to Side Boob, Side Bum is the visual conception of the bare waste of a woman(or if an unfortunate situation, a man), while the back and front of the waist is visually obstructed or concealed, yet still revealing the curvature of the buttocks.

(Person A): I don't understand why people fixate over the Princess Leia bikini, that cloth she's wearing over her waist covers everything!

(Person B): Except when she points her hips towards the camera and reveals some major side bum.

Side Bum by RapidEyeMovementOfTheTiger January 26, 2011