I live in Vancouver and participate in a monthly comedy show called 'Rapp Battlez Wezt Coazt'.
It's a lot like a regular rap battle except all the rappers are stand up comics or improvisers, and the battles are done in character with full costumes, with the two hosts commenting on the battle as it takes place. It's silly, but a lot of fun. Think Epic Rap Battles of History in front of a live audience and you get the idea.
I made an audio recording of my battle this Saturday- feel free to give it a listen. It's long because my opponent kept forgetting his rhymes and had to check his phone, but there are definitely a few good punch lines in there.
I'm the second guy up, battling as Andy Warhol and my opponent is battling as Salvador Dali.
https://soundcloud.com/whoompthereitis/salvador-dali-vs-andy-warhol-battle-rap