Okay, here we go.

If you have a T-shirt with a patently offensive message or image, such as “2 + 2 = 4” or any given Bizarro panel or the name Avant Garde in the Avant Garde typeface, and you want to generate immense lulz at school or the city council meeting, do this first:

Screenprint or airbrush or iron on a large black censor bar on the inside of the shirt.

Then, when The Man inevitably orders you to invert the shirt . . . say not a word. Just comply . . . with a canary-eating grin.