What's Poppin'? Firecracker - Long Sleeve T-ShirtFirecrackers answering their own rhetorical questions is the exact energy level the Fourth of July deserves. The bar for holiday humor is so low it's underground, and this pun still limbo'd right under it. The Details: Distressed white retro block text reads "What's" above "Poppin'?" with a question mark. A red firecracker snapping in half sits between the text lines, centered around a bright yellow explosion burst with red spark lines radiating