In 1974, arms and legs were added and Kool-Aid Man was introduced as a 6-foot-tall pitcher of cherry Kool-Aid, reportedly voiced by Grey Advertising composer Richard Berg and created by Alan Kupchick and Harold Karp (of Grey Advertising). Children, parched from playing, or other various activities, would typically exchange a few words referring to their thirst, then put a hand to the side of their mouths and by shouting "Hey, Kool-Aid!", whereupon, the Kool-Aid Man would make his grand entrance, breaking through walls, fences, ceilings or furnishings, uttering the famous words "Oh yeah!", then pour the dehydrated youngsters a glass of Kool-Aid. In 1979, the character's mouth was again animated to move in synchronization with the voice actor's singing and/or dialogue.