Speed burnt design.  

This is what a mug would look like if Barry Allen forgot to put down his coffee before racing off into the Speed Force. It’s like forgetting your coffee on the roof of your car but then driving faster than 186,00 miles per second.

Maybe the idea behind this mug is that you should really slow down a little bit and drink your coffee before rushing into the next thing on your superhero to do list. If you don’t take the time to know what you’re doing, you’re gonna lose a lot of coffee cups.