[AtlUmpSteve]

I think the key here that we might want to impart to those who are unsure, is that we cannot ignore either strike three nor ball four. Despite mechanics that now tell us to NOT coach, not tell them where first base is, not announce "four", etc., our choices do not include allow another pitch to be thrown after a batter has completed her at-bat.

Step out from behind the catcher, do not let the pitcher throw another pitch. If necessary, you might add "that's four" to the oblivious batter who has walked; or "that's three" to the oblivious batter who has struck out. If everyone is just staring at you, you might want to ask your partner "what count do YOU have?"