Well, when curling on real ice, players are constantly shouting sweeping instructions to teammates.
Even though Street Curling doesn’t have sweeping, there’s no reason you can’t test out your yelling abilities. Some common shouted instructions are:
HURRY HARD! That means the rock needs some serious sweeping. Sort of old school.
OFF! It’s too heavy. Stop sweeping it.
YUP! A simpler, more modern version of HURRY HARD. Often followed by a GOTTA GO! if the situation is especially dire.
WHOA! Stop sweeping.