Romantically flirting or charming someone. Mostly done by males onto females. There can be different variations of rizz.
Person 1: Yo bro, go rizz her up.
Person 2: Aight let me use Mexican rizz.
Person 2: Hey girl, are you the wall? Cuz, I can't get over you
Girl: Get away from me.
Short for charisma (cha"rizz"ma.)
The attraction or sexual appeal of said individual. The term "W Rizz" is often used when an individual has the ability to "rizz up" another individual of the opposite sex unless if they're gay.
Example:
Jose: "Damn girl you so fine, you down to come to my place and spread this fatass cheeks of yours?"
Carmen: "Yes papi!!! You so hot omg!"
Jose's friends: "My boy got W Rizz sheesh."