Stop, drop, and roll.
Quick English lesson that's important for science. Flammable and inflammable are synonyms, not antonyms. You know how you can be "inflamed" with emotion, i.e. "on fire"? It has the same root as "inflammable." Now you know (we hear it's half the battle).
Our lawyers told us we had to add a disclaimer to this shirt's page. So here we go:
The text of this shirt is not intended to encourage the wearer of this shirt or its readers to set things on fire. ThinkGeek shall not be liable for any loss or damage of whatever nature (direct, indirect, consequential, or other) whether arising in contract, tort or otherwise, which may arise as a result of your wearing of (or inability to wear) this shirt, or from your purchase of (or failure to purchase) the shirt from this site. Purchaser is solely responsible for the use of the shirt in any applications, including those of an experimental nature.But srsly, kids, please always have a responsible adult around when working with fire. Also, it never hurts to have a fire-escape plan and a fire extinguisher. Store them next to your zombie-escape plan and your zombie extinguisher (read: shotgun).
"Non-flammable? Challenge accepted." in white ink on a black, 100% cotton t-shirt.