Cummy Dog 

A Boston Cream Pie donut filled with dog jizz, instead of the cream.

Ha! Pranked you bitch with my cummy dog!

Cummy Dog by Smegma69 May 16, 2019

Cummy Dog 

The act of shitting and then masturbating on the shit as if you were squirting mustard on a hot dog.

Alternative option:
Have a female shit while she is on her period, and drip period blood on the turd. Finish it out with the cum.

Fucking Ryan got me good with a big steamy cummy dog right on my car's floorboard.

Cummy Dog by mcbadass69 October 25, 2020