The Wiggles (1998)

S5E6 Playing a Trick on the Captain

Captain Feathersword is convinced the entire crew has forgotten his birthday, even though he’s plastered posters all over the SS Feathersword announcing the big day. Unbeknownst to him, the crew is secretly playing a trick—they all pretend not to remember. As the captain grows more and more downhearted, the crew surprises him with a joyful celebration, ending with everyone singing “Have a Happy Birthday, Captain” and proving they never forgot at all.