Definitions by SwAgMaStEr2o0o

undercheese 

after sex the man makes semen and if he doesnt clean it up under his balls it makes a yellow fungus hard to get off

john: sooo how was melany last night in bed?
nate: aaaaawsome but i got some seriouse undercheese!

undercheese by SwAgMaStEr2o0o July 25, 2011