Numero 3
To masturbate. It is a slang extension of the common euphemisms where number 1 refers to urinating and number 2 refers to defecating.
A: Vladimir, what are you doing in the bathroom? B: Me... doing a Numero 3! Oh! If number 1 is to pee and number 2 is to poop, what is Numero 3? A jerk off.
Automatically translated from Spanish