^That's not insecurity really. He's just one of those guys and wants to retain that image. When you're a joker, people let their guard down around you and might say insulting stuff. I would say that he's really concerned about his image but that's more for financial reasons. 50 Cent would be too but he sees his "class clown" persona as his method to getting money. Jay is more like "OK, yeah, don't mention Beyonce and don't crack jokes cause I'm not that dude".