I usually try to ignore the "bullys" at the table as they usually don't have any more idea what they are doing than anyone else. If they did they wouldn't say anything. But I have pushed back on them before. I had one guy going off one day when i was messing around at a play money table probably 6 months ago. As you can imagine he was going on and on about how good he was and how bad everyone else was playing. I ignored him until he decided to call him self a Shark in a pool of Donks. All I typed was "yeah, because the real sharks play at the play money tables" It go real quiet after that. Oh, that and I took all of his chippies.