According to him. I'm not sure how old this video is but I peeped it the other day and I found it entertaining. Mos Def is a really talented rapper and in the video below he goes into a rant that's like nothing I ever thought I would hear from him, I think he may have even been drunk or high.
Either way, this is the kind of bullshit that I love. Mos goes in and talks about how he will pretty much serve every other rapper from Beanie Sigel to Freeway to Jay Z, Kanye and whoever else want it and he's down to put money up and battle on pay-per-view and all that.
check it out.