John P. Navin, Jr. (born July 24, 1968) was an American actor. He was born in Philadelphia and did mostly teen roles during his brief career. His most famous appearances were in the 1981 Tom Cruise film Taps and the 1983 film National Lampoon's Vacation. In this latter film, he played Cousin Dale -- the chunky-but-hunky rural boy who spends his time lounging around the farm in a baby-doll t-shirt, being molested by older boys and masturbating a lot.
Dunno what he's doing now. He's pretty much dropped off the grid.