A fork of Rural Dictionary
When a male masturbates while sitting on the toilet defecating.
This word combines the word chump with the word blumpkin.
"What is taking him so long in the bathroom?"
"He is probably giving himself a chumpkin again!"
Having somebody eat your ass while you are taking a piss.
Was at the family change room ripping a whiz, when Sweaty Rhonda give me a Big Chumpkin