Why do people say "shoutout to my man x" or stuff like that, when they're on stage for something totally unrelated? What's the point?
Free Advertising. If they can get others to do it back to them, they both prosper. The same is true for starting fights between celebs.
shows affiliationshows respectshows relevance you clearly need to study more of this:after 1:30
It's manipulation when you want to kiss someone's ass. Then they love you forever.
