Actually, the famous Cubs announcer Harry Caray use to call it a “kid’s game” : http://en.wikipedia.org/wiki/Harry_Caray
So one can call one out on this, but one of baseball’s most famous announcers use to say this. He’d usually say it in reference to the baseball strikes, “They are paid millions to play a kid’s game.”
Just him grinding an ax then. Never seemed to mind it being an adult game when he was being paid to talk about it.