He was on a can of Coca-Cola but never appeared in a Coke commercial. Here's the only time we've ever seen Goku drink alcohol though. DBZ ep 288. Set in Age 774 during the Peaceful World arc before the time skip to Age 784.If you can find somewhere where Goku is drinking coke, I will add Goku drinking coke.... Coku... LOL
I have always seen him piling food down his throat, I am shocked more food places didn't try to get him as a mascot.
Saiyan princesses don't drink beer.