Juulie,
I had the following play a couple of years ago. Team A is down 6 points with less than 3 minutes to play. A1 hits a driving layup. B1 swipes at the ball, misses and hits the backboard. As the ball goes through the hoop, the coach is signaling for time-out. I grant the time-out. He says, "I didn't want a time-out. I wanted a technical for slapping the backboard."
Guess what? He got a time-out. And he doesn't use that signal anymore unless he wants a time-out.
Tony