We used to sing it on the bus to day camp, circa 1960. We would try to time it so we got down to zero just as the bus was pulling in to park. If we finished too early, didn't faze us: Zero bottles of beer on the wall/Zero bottles of beer/If one of those bottles should happen to fall/Minus one bottles of beer on the wall. We'd go down to about minus ten, then Minus ten bottles of beer on the rack/Minus ten bottles of beer/If one of those bottles should happen to come back/Minus nine bottles of beer on the rack until we got up to zero.