Stinky pee
A rancid odor your penis gives off after not washing it. Could be the cause of masturbating and not cleaning your penis off afterwards to not washing your penis.
Guy1- *takes off pants*
Guy1- "EWWW! I can smell a case of Stinky Pee already!"
Guy1- "EWWW! I can smell a case of Stinky Pee already!"