Too much checking or checking away from the play will result in roughing calls. Usually occurs when checking. Using the stick or your leg to trip an opponent. Dropping the gloves. Get in a fight, go to the box.
Nobody cares who started it.
If the gloves come off, there's gonna be some pain. You better have won, too, otherwise you'll have five minutes to think about what a wuss you are. Leave the game Extremely rare Results in disqualification from competition. This results from getting a little too zealous in starting fights and such. Head to the showers, punk.