bumpkin butt 

A woman's saggy butt that developes after having kids and loosing some weight. Resembling a pumpkin that has melted and sagged after sitting on the porch too long after Halloween.

Man, Aubri used to be hot in high school, but now that she has had kids she has bumpkin butt.

bumpkin butt by CatDog122 June 18, 2017

butt blumpkin 

the act of doin' some chic in the ass while on the john

You haven't experienced life until you've received a butt blumpkin.

butt blumpkin by Woodrow Bacon September 19, 2012

Peanut Butter Blumpkin 

When a girl dips your penis in a jar of peanut butter and then proceeds to give you a bumpkin.

"Dude, I got the most splendiferous peanut butter blumpkin from that chic Brenna last night!"

Peanut Butter Blumpkin by Articuno69 November 25, 2013