According to the Urban Dictionary, this is an obnoxious way to interrupt someone and steal their moment, while wryly mocking that media train wreck that is Kanye West.
Based on West's instantly infamous interruption of Taylor Swift's acceptance speech at the 2009 MTV Video Music Awards for Best Female Video with his insane microphone-stealing shout out to Beyonce.
Bob: Thank you Mr. Brown for having us in to give this sales presentation. We'd like to talk to you today about...
Alfred: Yo, Bob, I'm really happy for you, and Imma let you finish, but I just got to say our product is is one of the best products there is!
I love my daily definitions from the Urban Dictionary. I hope you define your day in a spectacular way.