Endless Blue Birthday Musical Greeting Card – Hilarious Prank That Plays for Hours

Celebrate birthdays with a side of chaos. The Endless Blue Birthday Musical Greeting Card by Joker Greeting is more than just a card — it’s a non-stop party. Designed to look like a normal birthday card, it plays a cheerful birthday tune when opened… but here’s the twist: once the activation tab is removed, it loops the music endlessly until the battery dies 

How the Endless Musical Card Works 

1. Open the card to test the sound; sign it, close the card to stop the sample
2. Insert the card into the envelope; pull the tab from the spine to arm it.
3. Once the recipient opens the card it will start and loop non-stop even if they close the card; it will run until the battery dies; hours later
4. This card has no glitter inside when it is broken like our other cards

*Plain white envelope included in all cards

Perfect For:

• Gag gift lovers who want their card to really be remembered

• Birthdays for friends, family, coworkers — all ages welcome

• Office parties, birthday pranks, or anyone who “loves” surprises

• Those tired of boring greeting cards and ready for chaos