Marvin is just a hugger.
It begins with a long embrace with Larry Drew. Seriously. Marvin then side shuffles out of the hug and skips toward the basket looking up at the stands as he claps. Upon arriving, he slaps both sides of the backboard and (usually but not always) hangs on the rim. Sounds pretty lame huh?
Wrong. Marvin does this every single game, exactly how I described. And somewhere that idiosyncratic weirdness morphs into awesomeness. Watch it next time. You can win a lot of money betting with your buddy whether he hugs Larry Drew.