Yeah, great for lobbies like that. Can't think of a more effective, quick to type thing you could dump in chat.

I've deployed it in real life too and watched a bunch of awkward 20-somethings go from nothing but occasional stressed sniping at each other to making "ooo ooo aaa aaa" noises while throwing themselves back into the job at hand. Truly a sight to behold.

Most of my use has been in games though, where I've accidentally become team parent to far too many groups and had to get a bunch of maladjusted shut ins back in the right mind set before a tournament or whatever.