I didn't see it until I saw this post and stared at the shirt.The green T-shirt has an artistically-designed motto reading,"Recycle, Reuse. Renew. Rethink." The "RE" is capitalized with the other words stacked on top of one another.
When only reading the letters from left to right, a person can see the intended message of the shirt, however, if read vertically, one of the words spells out something offensive.
I want to know who reads vertically. It's a t-shirt not a Chinese scroll.