Definitions by Nicholas Santa Maria

yatisan 

The person that is the japanese master of tits hence his nickname "Titisan"

This name is often used for people who are good with pleasure in bed, but not really when it comes to intercourse.
"Bro! What is that guy? Hes like the yatisan of today!"
"Dude, why cant I be a yatisan?"

yatisan by Nicholas Santa Maria April 20, 2015