Rizz is the level of ability to talk and possibly attract women while speaking. Your rizz usually depends on your wordings and how the girl you're talking to reacts to it.
"Hey boy I got them rizz"
"Alright prove it, pretend I'm a girl"
"What's up girl, you taking a shower without me? Hail naw." <--- (btw that rizz move is risky)
"Zamn boi you got that rizz"