banuncle 

When a banana member of your banana group has a baby, you then become a banuncle.

Whitney is a banuncle now that Josh had a baby on Monday.

banuncle by BananaMan4L October 10, 2020

baduncledunk 

A nice, somewhat attractive pair of buttocks belonging to an older woman.

Dude, your moms got bangin' baduncledunk!!! I'd totally tap that wrinkly shit!

baduncledunk by Sean K. March 29, 2007