Happens most likely when you're sleeping on a couch and a cat sits in your lap and warms up your crouch. Thus later on when you wake up your cock'n balls are immersed in sweat and have been incubating the foulest bacteria.
I passed out on your couch and your cat gave me Musty Jacobs disease!
I gotta take a shower man, i woke up with some serious musty jacobs disease!
Watch out for that cat its gonna give you musty jacobs disease.
Man i can smell your f**n musty jacobs from hear.
She wasn't stoked on the bad case of musty jacobs disease i had.
Had to burn my boxers. Damn cat gave me musty jacobs disease.