The only excuse I would except is a turtle head. Other than that it's classless. No joke two weeks ago I'm playing this guy who's an APA 3, probably 65-70 years old, think cross between milt from family guy and Ed Rooney. He's stretched out over the table on a tough 8 makes it, gets all excited and literally craps his pants. He sets his cue down and runs to the barthroom knees so far apart he must have been clenching something fierce. He's waiving his hands up in the air yelling "I'M GETTING OLD!!! I'M GETTING OLD!!!" funniest thing I've seen in a long time.
"I'M GETTIN OLD!!!!!"
Took him a good 20 minutes to come back and finish the match.