Unusual Free Throw Routine

Watching the Northwestern-Stanford game, a game which Stanford turned over (literally) the win to NU, we noticed an odd free throw ritual. Late in the game, Stanford fouled NU freshman, Drew Crawford, who during the obligatory close up on the free throw shooter was either talking to himself or the Stanford player on his immediate left.

Reading lips it looks a lot like he's saying a four letter word that starts with F and sounds a lot like duck...you. If we find online video of it, we'll post a link but something to be on the look out for.