Well there's the original three wolf moon t-shirt, a three keyboard cat moon t-shirt, and a three Teen Wolf moon t-shirt, so why not a three Worf moon t-shirt? I have no idea if these are actually for sale, but send me $25 and a blank t-shirt and I'll see if I can't iron one on for you. Sadly, I won't be able to.
Thanks to Blastphemer and Riker, who don't have to wear shirts because they're so hairy. Gross.