Rock in socks

A shirtless man stands in a grassy field next to a vehicle, raising his right arm with a finger pointing upward, then the scene cuts to him standing on a boat by a lake, making peace signs with both hands while wearing a cap, goggles, and swim trunks. He then runs and jumps into a river, creating a splash, before the scene shows him from behind, stepping into the water from the boat, wearing striped underwear and socks.