A G-string. A piece of underwearthat has a thin strip of fabric that hides in the crack between the buttockcheeks, 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"
See g-string, underwear, buttocks, bum, bikini, knickers
