He retweets Fitty, then translates the tweet into the Queen's English. For example, when @50cent says
Busta still has the best show in hip-hop I'm not shiting on him. And I aint dissing serena either I said i gotta workout!yal be buggin
what he means is
I am sincere in praising Busta Rhymes' live abilities and Serena Williams' sexually intimidating strength. You resemble insects.