Spell ICUP
Durable vinyl sticker printed in-house and made for indoor or outdoor use.
✓ Weatherproof, UV-resistant vinyl
✓ Ships in 1–2 business days
✓ Made in-house by our small U.S. team
Description
Spell ICUP Bumper Sticker for the Terminally Immature
This bumper sticker features a sinister skull alongside the words "SPELL ICUP"—an innocent-looking request that instantly turns into one of the dumbest jokes in existence. It's childish. It's ridiculous. It's exactly the kind of prank that catches people completely off guard before they realize they've played themselves.
Available as a premium vinyl sticker or durable magnet, this design is perfect for cars, trucks, laptops, toolboxes, coolers, garage fridges, and anywhere else that could use a little lowbrow chaos.
Best of all? Buy 2, Get 1 FREE on all Frog Mustard stickers and magnets.
Funny Sticker That Outsmarts the Reader
This design is proof that the simplest jokes are sometimes the most devastating. The intimidating skull sets the stage, people expect something edgy... then they proudly spell "ICUP" and immediately regret every decision that led them there.
Premium Weatherproof Sticker Built to Survive Bad Decisions
Unlike your sense of humor, this sticker is built to last.
Every Frog Mustard bumper sticker is handmade using premium all-weather vinyl that's:
- Waterproof
- Smudge-proof
- Fade-proof
- Car wash safe
- Built to survive rain, sun, snow, road trips, and whatever nonsense your vehicle gets into
Rectangular designs measure approximately 8.5 x 2.5 inches, while die-cut designs are typically 3–4 inches. Since every item is handmade, slight size variations are normal. Mockup images are enlarged for visibility and are not to scale.
For the best results, apply your weatherproof sticker to a clean, dry, smooth, glossy surface. Textured or low-energy plastics may reduce adhesion, because physics refuses to participate in the joke.
Tough Car Magnet Option
Want the joke without the commitment? Grab the car magnet version.
Our standard magnets are 20 mil thick, while our heavy-duty 30 mil magnets are recommended for colder climates or higher-speed adventures. Just remember that magnets only stick to metal, and many newer vehicle bumpers are plastic.
For maximum longevity, remove magnets before automatic car washes or extreme weather.
Why Choose a Frog Mustard Bumper Sticker?
Every bumper sticker is an original Frog Mustard design made for people whose maturity peaked around middle school—and they're perfectly okay with that.
You'll also get:
- Handmade quality from Washington
- Ships in 1–3 business days
- Worldwide shipping available
- Free shipping on qualifying orders
- Original artwork designed for maximum laughs
- Access to rewards, monthly subscriptions, bonus designs, and the Frog Army Sticker Stars contest at Frog Mustard
If making strangers unknowingly tell the joke themselves sounds like your kind of entertainment, this one belongs on your ride.
Not sure where to start? Our bestselling stickers are the ones people can’t stop buying or arguing about in traffic.
Want to make sure your sticker actually sticks and lasts? Check out our full sticker guide for placement, surfaces, and longevity.
For new drops, chaotic ideas, and stickers in the wild, follow us on Instagram—we post the good stuff there first.
Size, Materials & Care
For best results, please review and follow the full care and application instructions included with your order and available on our FAQ page here.
Sizing
- Rectangular bumper stickers are approximately 8.5 × 2.5 inches.
- Die-cut stickers and magnets are typically 3–4 inches.
- Sizing may vary slightly, especially on hand-cut magnet materials.
- Mockup images are not to scale and may appear larger for visibility.
Materials
- Made with premium all-weather vinyl.
- Stickers are waterproof, smudge-proof, fade-resistant and car-wash safe when properly applied.
- Designed for outdoor use on smooth, clean, glossy surfaces.
- Apocalypse-resistant, within reason.
Magnets
- Standard magnets are 20 mil thick.
- 30 mil extra-thick magnets are available and recommended for colder climates.
- Magnets only stick to magnetic metal surfaces.
- Many modern bumpers are plastic, so please test your vehicle before ordering.
- Try your trunk, doors or side panels if your bumper is not magnetic.
Basic Care & Application
- Apply only to a clean, dry, smooth, glossy surface.
- Clean the surface thoroughly before applying and allow it to dry completely.
- Avoid textured, plastic, rubberized, dirty, dusty, waxy or low-surface-energy surfaces.
- For best results, apply in mild temperatures and press firmly across the full design.
- Do not apply below 45°F.
- Wait 24–48 hours before washing your car after applying a sticker so the adhesive can bond.
- Remove magnets before car washes or extreme weather, including snow and high winds.
- Clean beneath magnets periodically to prevent trapped dirt or debris from affecting your paint.
Important Surface Disclaimer
Frog Mustard products work best on glossy, smooth, clean and dry surfaces. Many coolers, kayaks, vehicle cladding and similar items are made with low-surface-energy plastics, which can make it difficult for adhesives to bond—even when using premium vinyl.
We cannot offer refunds for poor application, failed adhesion on textured, plastic, dirty or otherwise incompatible surfaces, or magnet incompatibility with non-magnetic vehicle panels. Please message us before applying or purchasing if you are unsure whether your surface is compatible.