It seems to me this name has got a lot of potential, along the lines you describe. It is a catchy phrase, kind of a play on 'simon says'. You could enter the world of Tshirt retail and develop the site, building the brand yourself, or search out someone looking to do same. The latter would be less work (but still considerable work, I suspect) but would probably net much less as well.
I'm guessing value to an end user is low xxx to low xxxx. Reseller maybe low to mid xx.