Happy mint is a person that skrapes up gum from sidewalks, under tables, or any other gum thats previousley been chewed, to have the plesure of colecting or chewing it them selves.
"damn, you know that thot i met up with the other day, man it was a total turn on when i realized she was chewing gum that she found under my desk, shes a total happy mint dude"