Quote from : The Art of Fielding Book

Owen," Henry said excitedly, "I think Coach wants you to hit for Meccini." Owen closed , on which he had recently embarked. "Really?" "Runners on first and second," Rick said. "I bet he wants you to bunt." "What's the bunt sign?" "Two tugs on the left earlobe," Henry told him. "But first he has to give the indicator, which is squeeze the belt. But if he goes to his cap with either hand or says your first name, that's the wipe-off, and then you have to wait and see whether--" "Forget it," Owen said. "I'll just bunt.