Would you address this?

[tnolan]

lol.
picturing this happening is actual pretty funny.

but yeah, you have to address this before the free throw takes place in this case play.
something as simple as, "hey #25, knock it off" while shaking your head no.

if he doesn't stop, maybe throw the coach a bone by telling him that he better address it, depending on how the game has gone thus far. or possibly just warn the kid, and pin him if he doesn't stop.

unsportsmanlike covers a broad range...this def. qualifies