candidate: During the 1970s , Chicago - based television advertising for Dad 's featured a different jingle sung by an ensemble with the following lyrics: " If it foams up to meet you "" It 's got ta be Dad 's , it 's got ta be Dad 's "" If it foams up to treat you "" It 's got ta be Dad 's , it 's got ta be Dad 's "" So ask for Dad 's , it 's good old - fashioned "" With the taste of yesteryear "" If you do n't ask for Dad 's "" All you 're gon na get is , "" All you 're gon na get is , "" All you 're gon na get is , " " ... root beer ! "