Wanna Go

To fight someone

Person 1: You Suck
Person 2: Oh Ok, Wanna Go?

Urban Dictionary

The website I go to figure out what half of modern slang means
If you don't know what a slang word means, time to check Urban Dictionary

Person A: Whore
Person B: *Laughs*
Me: What does "whore" mean?
Person A: ...
Me: Time to check Urban Dictionary!