The BEST sex a man can give usually giving it extremely hard and non stop.
Friend #1: Omg me n my girlfriend had the 'zitko'
Friend #2: Woah, you must be good to give a 'zitko'
when you shit, piss, vomit cum and bleed on someone basically all at the same time. The sex that goes with it is usually shit too.
Omg eww, I just did a zitko, that was sooo chat.