Definitions by Uncle Fingerz

Ketchup Grandpa 

A term used to refer to men that wear stained undershirts and are typically associated with perverse behaviour and interests. Ketchup Grandpas are known for their grunting and licentious propositions.

"Man, Greg is such a Ketchup Grandpa."

Ketchup Grandpa by Uncle Fingerz December 14, 2012