Family Guy Season 5 Episode 11
The Tan Aquatic with Steve Zissou
When a bully picks on Chris, he goes to Peter for help, who ends up beating the kid senseless. Realizing bullying is fun, Peter runs around beating people up until it's actually Chris who steps up and beats Peter back to his senses. Meanwhile, when Stewie goes out without sunscreen and accidentally gets a tan, he becomes obsessed with tanning. After being left in a tanning bed for six hours, a sunburnt Stewie fears he has cancer and lives every day like it's his last.