bumping raisins

When two women engage in female lesbian sex. Bumpings clit on clit. In simpler terms, two girls rubbing pussy on pussy.

"Omg girl, Lindsey and Andrea are totally bumping raisins"

Raisin Bumping

the act of two or more old people having sexual intercourse

my grandma was raisin bumping with this guy last night
I walked in on my grandparents raisin bumping