Endless Birthday Farts Card with Glitter
This birthday card plays fart sounds nonstop until the battery dies
It looks like a sincere birthday card — "Have a Very Happy Birthday" in bright, cheerful lettering — right up until they open it. Then it rips a fart. Not a song, not a melody, just relentlessly enthusiastic farts on a loop that does not stop. Close the card and it keeps going. Set it down and it keeps going. It loops nonstop, even when closed, for hours until the battery dies. This is one of those cards that doesn't stop playing — the more they want it to quit, the funnier it gets. You can open it to test the sound, sign it, and get it ready first; it only arms once you pull the tab, so there's no rush and no surprises on your end.
That's the whole joke, and the inside seals it: "You Old Fart." It's juvenile, it's joyful, and it's funny for the same reason it was funny when you were eight. A card that won't quit beats a paper one that gets read once and tossed — and this one keeps performing long enough to earn an "are you SERIOUS?!" text, which, if it's been a while, might even kick off an actual conversation. For dads, moms, kids, friends, and any birthday person who still laughs at a good fart.
How the Endless Musical Card Works
- Open the card to test the sound, sign it, then close the card to stop the sample.
- Insert the card into the envelope and pull the tab from the spine to arm it.
- Once they open the card, it loops non-stop — even if they close it — and plays for hours, until the battery dies.
- The glitter is packed around the battery compartment, so when they finally give up and pry it open to kill the sound, glitter spills everywhere.
Great For
- Any Birthday That Needs a Laugh — kid or adult, the fart joke is universal.
- The Friend Who Started It — for whoever in your life has always found farts funny.
- A Milestone "Old Fart" Birthday — 30, 40, 50, the card says what everyone's thinking.
- Pranking a Sibling or Best Friend — sincere on the front, ridiculous the second it opens.
Plain white envelope included in all cards
Frequently Asked Questions
Can I sign the card before it activates?
Yes. You can safely sign the card and it will play one-time. Close the card and it will stop.
How long does the song play?
Once activated, the card plays continuously for 3 to 6 hours until the internal battery dies. There is no off switch. Please note; batteries are like a sponge so if they open it again you'll get more music.
How do I stop the song?
Once activated there is no off switch. The song plays until the battery dies. Attempting to destroy the card triggers the hidden glitter (or in some cases the glitter is found when the pull strip is removed). That's the prank.
Does the card come with a Glitter Envelope
No. All cards ship with a plain white envelope. The glitter is already built inside the card itself, either hidden inside waiting to be unleashed or behind a pull-strip reveal. If you want the full glitter ambush on the outside too, we sell Glitter Trap Envelopes separately.
How do I activate the card?
We suggest inserting the card into the envelope first the remove the instructional tab from the spine. The moment your recipient opens the card, the song (or sound, depending on your design) starts playing automatically and won't stop until the battery dies or it's broken.





