well, i think eminem is a tool anyway...but i can agree, having a man stick his ass right in your face if you are not into that, on national TV, is rather nasty.
That being said, eminem being such a total prick about it, is what makes it funny...had he dealt with it in good humor, before the ass ever got into his face, he could have reacted differently...he had about 30 seconds to see Bruno coming down towards him...he could have gotten in on the joke, by getting up and pretending to catch Bruno, or saying "I've got you", or just going along with it to the point where he could have redirected Bruno's legs so they weren't wrapped around his head...he could have played it it off, played along, and everyone would have had fun with it...
but, if it was real, it was his infantile behavior that made it so funny, and his thugs throwing Sasha around and shoving him...seriously...do you need four gigantic bouncers sitting around you at the MTV Movie awards? Is Miley Cyrus going to pull a hit on you? How stupid.