WARNING: FREE SHIPPING ON EVERY ORDER — SHIPS IN 24H — 12,000+ MATES PRANKED AND COUNTING  ★  WARNING: FREE SHIPPING ON EVERY ORDER — SHIPS IN 24H — 12,000+ MATES PRANKED AND COUNTING  ★ WARNING: FREE SHIPPING ON EVERY ORDER — SHIPS IN 24H — 12,000+ MATES PRANKED AND COUNTING  ★  WARNING: FREE SHIPPING ON EVERY ORDER — SHIPS IN 24H — 12,000+ MATES PRANKED AND COUNTING  ★ 

The label that makes every passenger double-take.

4.8 stars · 12,000+ sold

Factory-looking warning stickers that turn a boring car into the best prank on the road. Stick it. Wait for the stare.

  • Free shipping — ships in 24h
  • Peels off clean, zero residue
  • Laughter-or-it's-free guarantee
  • Laughter-or-it's-free guarantee
  • Free shipping
  • Ships in 24h
  • Secure checkout
  • Visa · Mastercard · Amex · Apple Pay · PayPal
  • 30-day refund
  • Laughter guarantee
The problem

Your car is spotless. And completely boring.

Passengers hop in, buckle up and never notice a thing. One tiny warning label changes that. Slap it on and watch them look twice.

01

Instant reaction

They read it, pause, then lose it. Every passenger. Every time.

02

Looks factory-original

Same layout as a real safety label, so the reveal hits ten times harder.

03

Zero effort

Peel, stick, done in 10 seconds. No tools, no skills, no regrets.

The reveal

Stick it. Wait for the stare.

The door jamb is the perfect spot. It sits right next to the real safety labels, so it looks 100% official until someone actually reads it.

Dashboard trim and door panels work great too. Peel, press, done in 10 seconds.

Tech specs

Built like the real thing

Weatherproof 5-year vinyl

Which means: Power-wash safe. It stays on until you decide the joke is over.

High-contrast warning yellow

Which means: Looks 100% factory-original, so the reveal lands harder.

Zero-residue adhesive

Which means: Peels off clean when you sell the car. No sticker ghosts.

4 x 2 inch label size

Which means: Big enough to read from the passenger seat, small enough to look official.

Gloss laminate finish

Which means: Resists fading, scuffs and sun, so it looks sharp for years.

4.8 stars · 12,000+ sold

Car guys can't stop talking

4.8

Based on 12,000+ stickers sold

Verified

My girlfriend lost it

“Stuck it on the door jamb. She read it out loud, stared at me for 5 seconds, then couldn't stop laughing. Best 24 bucks I've spent on the car.”
Jake M.Civic Type R owner
Verified

Group chat has not recovered

“Bought the 6-pack and put one in each of my friends' cars as a prank. Sticks perfectly and not one of them has noticed yet.”
Priya S.Golf GTI owner
Verified

Zero residue, zero regrets

“Shipped fast, peeled clean off my test spot and went back on straight. Zero residue like they say. Ordering the 9-pack next.”
Tom H.WRX owner
Verified

Looks factory-original

“Honestly looks like it came with the car. My mechanic did a double-take during the oil change and asked if Ford started putting warning labels on the doors.”
Marcus T.Mustang GT owner
Verified

Worth every penny

“Put one on the dash trim and one on the frunk latch. Passenger reactions are priceless. The adhesive is solid and it hasn't lifted in the heat.”
Dana R.Tesla Model 3 owner
Verified

Holds up in the sun

“I live in Arizona and was worried about fading, but three months in and it still looks brand new. Took off one star only because I want more designs.”
Luis G.Tacoma owner
Verified

Smaller than I expected, perfect

“About 4 x 2 inches, so it tucks neatly on the door jamb without screaming. That's exactly what makes the reveal so good.”
Aisha K.Mazda Miata owner
Verified

Bought twice

“First order was the 3-pack to test. Now I'm back for the 9-pack to hand out at the truck meet. Everyone asks where I got them.”
Ben W.F-150 owner
Verified

Clean peel, clean joke

“I was nervous about residue on the trim but it came off like nothing. The joke lands every time someone new gets in the car.”
Sofia L.Audi A4 owner
Compare

SlapJam Sticker vs. generic stickers

FeatureSlapJam StickerGeneric
Looks like a real factory label
5-year weatherproof vinyl
Peels off with zero residue
Free shipping, ships in 24h
Laughter-or-it's-free guarantee
Pick your pack

The more you stick, the more you save

3-Pack

The Starter

$24.95

$12.95

$4.32 per sticker

  • Free shipping
  • Ships in 24h
  • Laughter-or-it's-free guarantee
Best Value

6-Pack

The Legend Pack

$31.95

$19.95

$3.32 per sticker

  • Free shipping
  • Ships in 24h
  • Laughter-or-it's-free guarantee

9-Pack

The Squad Leader

$36.95

$24.95

$2.77 per sticker

  • Free shipping
  • Ships in 24h
  • Laughter-or-it's-free guarantee

Free shipping is included on every order. Small-batch print runs, so popular packs can sell out between restocks.

The “Laughter or it's free” guarantee

If your mates don't crack a smile, tell us within 30 days. Keep the stickers and we'll refund you. No forms, no hassle, no hard feelings.

No-BS answers

Questions? Answered.

Your car is one sticker away from legendary.

The 6-Pack is $19.95 $31.95. Free shipping, ships in 24h, backed by the laughter guarantee.

  • Laughter-or-it's-free guarantee
  • Free shipping
  • Ships in 24h

6-Pack

$19.95 $31.95