Fanny Belly 

When a woman reaches a certain age, a fanny belly becomes exposed, especially whilst wearing jeans below the belt line, a protrugen below the belt line.

fanny belly, fuff belly, toodle belly (male version)

Fanny Belly by thegrandwizard April 21, 2010

Fannybell

A very light-weight dumbbell that's typically of a homosexual design. (Usually meant as an isnult of one’s strength)

Mate, I bet you could even lift a fannybell.

Fannybell by The Urban Shakespear October 18, 2021