Since Class 1-A was doing Karaoke, Kirishima wanted to sing Promiscuous (by Nelly Furtado and Timbaland). Usually this is a song he wouldn't sing with anyone, but it was you..so he couldn't help himself.

"How you doin', young lady? That feeling that you giving really drives me crazy You dope, have a player 'bout to choke I was at a loss for words first time that we spoke"

He was doing the male rap parts