Hot-dog eating competition.
Homer from The Simpsons
Throw in a beer and Homer's got this.
no matter what they have to drink/eat Goku is physically superior which means if he's told to eat/drink more than Homer or he/he's family and/or friends will be killed he will do it effortlessly
otherwise he won't eat hotdog/drink beer...
Goku, due to Martial arts training he has a much faster metabolism and larger stomach to accommodate more food. Japanese food is healthier but heavier than a lot of American cuisine. No fat guy is going to out eat a Martial artist who part of their everyday diet is to "carboload"(eating alot of bread, oatmeal, soup, stew, meats, milkshakes etc) They eat alot of heavy ass food in succession. I know I practice Muay Thai, and I'm constantly hungry after training lol.