There's a line, players usually don't cross it and coaches usually don't cross it. Every once in a while you get a little temper tantrum on both sides, I certainly have had 'em. I'm not proud of those. ↗
When I was coaching with the Patriots, the players pulled a practical joke and I said, 'Do you think I'm Charlie the Tuna, like a sucker?' After that, they called me Tuna. ↗