Kids do the darnedest things

[Amesman]

Ball advances pretty quickly in the front court and B1 assumes LGP as A1 approaches. B1, either fearing pretty healthy impact or just plain trying to sell a charge that hasn't happened, starts to fall backward. Now, he's on his butt and A1, of course, sees an open shot and takes it. A1, however, leans ever so slightly forward and lands -- totally upright and on both feet -- but also on part of young Al Pacino, lying on the ground.

Never mind B1 doesn't get the T for bluffing the impact (not sure he was bluffing anyway). What's the call -- PC? 7th grade game. (I've read the recent LGP posts and still wasn't sure how one would whistle this. Perhaps a HTBT?)