Phineas and Ferb (2007)

S01E29 Boyfriend From 27,000 B.C.

Title: Caveman Crush Plot: During an archaeological excavation, the gang stumbles upon a caveman who becomes enchanted by Candace, who is sporting a cave girl outfit for a costume event. Meanwhile, Phineas and Ferb lend a hand to Buford as he searches for his lost goldfish.