YUP! That's the measuring stick at our house, too. When someone isn't having fun, anymore, it isn't a game, anymore, and it needs to stop, at least long enough for the one who's not having fun to leave the scene.
Exactly. If Pat freaks out unprovoked, we just send him outside or to bed ;-).
His impersonation of a human is getting better - he goes to Sunday School and Cub Scouts with only occasional problems ... none in Sunday School, and the one in Cub Scouts was because a list of items the leader wrote wasn’t alphabetized! Scouts starts at 7:00 p.m., and he’s crazier when he’s tired.