Skinny Mulligan is a childhood friend of Gilligan from back home. He mentions him several times in stories from his youth including one where Skinny ends up broke, when he was held back to the Eighth Grade and another when Skinny broke the kissing record with Florence Oppenheimer when they were chewing gum and their braces locked. Skinny also broke the record for holding his breath for two hours and twenty-six minutes in an apple-bobbing contest, but Gilligan reveals that he cheated. His real first name is unknown.
- Gilligan's other childhood friends mentioned in the series include Fatso Flannagan, Stinky Sullivan, Bobby McGuire, Rex Stonecipher and Walter Stuckmeyer.
- Agonized Labor - mentioned
- Castaways Pictures Presents - mentioned
- The Chain of Command - mentioned
- Gilligan Gets Bugged - mentioned
- Hi-Fi Gilligan - mentioned