Explosion muffin

The explosion muffin is a recurring spray paint graffiti art seen throughout Gravity Falls, Oregon. It is most prominent on the Gravity Falls water tower. Robbie is the artist of the graffiti.

History
The explosion muffin is first seen in "Tourist Trapped" when Robbie shows off his artwork to his friends. Robbie intended for the design to resemble an explosion, though Dipper mistakes it for a muffin. Robbie is later seen spray painting the graffiti at Ye Royal Discount Putt Hutt before being chased away by the royal employee. The design appears on the dumpster behind the Gravity Falls Mall.

Appearance
The explosion muffin is a red spray paint design Robbie paints around the town. It varies in size depending on the surface it's painted on.