it's the kind of charm a guy has on a girl.
Guy: Man, that guy has mad rizz, he just winked at a girl and she gave him her number
Short for cha(rizz)ma aka ability to pull girls
I got rizz now, no more bitchless for me
It's when you have a lot of sense of romance and charisma.
Rizz: Are you fire and I'm a candle cause when I look at you, you melt me.
the variable of how much you pull girls or boys
if that person has alot of rizz, he has a lot of girls