Sharks

Baby shark, doo-doo, doo-doo, (2 times) (thumb and pointer finger acting as shark's mouth)
Mommy shark, doo-doo, doo-doo, (2 times)(thumb and all fingers)
Daddy shark, doo-doo, doo-doo, (2 times)(two hands)
Grandpa gums, doo-doo, doo-doo (two times) (two fists, connected at wrists acting as shark's mouth)
Swimmers swimmin' doo-doo, doo-doo (two times) (swimming movements with arms)
SHARK ATTACK, DOO-DOO, DOO-DOO (2 times) (Yelling!, whole arms acting as shark's mouth)
Swimming back, doo-doo, doo-doo, (2 times) (alternate roll shoulders back, or whole arms as if swimming back)