My favorite thing about this The Balletcats shirt (next to the shirt itself) is the product description:
"Statement for cat snobs, felinist and people who hate(s) Alf. It was the second sequel of "The Man With His Words" series. Grandma handmade style sweatshirt with embroidered letterings." (emphasis my own).
Fortunately, the shirt is for sale, but you can only buy it in-store.
And sadly, that store is only in Indonesia.
UPDATE 11/28/11: The sweatshirt is now available for sale online here.