bum floss 

n. {Slang} - see butt floss, g string

"your bum floss is showing, pull up your pants."

bum floss by S_t_G October 14, 2004

Barbara Bum Floss 

when a hair gets stuck in your crack & you pull it out slowly.

I keep losing my hair but at least I've got some enjoyable barbara bum floss.

Barbara Bum Floss by Linda Flair August 14, 2010

Bum flosser 

When your underwear that isn’t meant to be a thing turns into one and you can feel the slow wipe every step you take

Catholic mother: “Mary! Pull out your wedgie I can see your bum flosser!”

Bum flosser by Laurentheinnocent December 16, 2018

bumfloss

A G-string. A piece of underwear that has a thin strip of fabric that hides in the crack between the buttock cheeks, rather than covering that crack like normal underwear. Named for the similarity with dental floss, that cleans the cracks between teeth.

"Look, She's wearing bumfloss. No wonder she's walking oddly"

bumfloss by ClayPipe July 16, 2008