"Sampling" from others' songs has been going on for quite a while now - ever since Run DMC put their spin on "Walk this Way", I guess. I'm not a big fan, but its intriguing.
I'm also not a fan of MGK, although this song isn't like most of his others. I do like Jelly Roll, tho.
As an aside, is the constant need for more tattoos a certifiable psychological disorder yet?