Not And Logic Gate + A Cat = A Nand Cat!
This is basic logic theory taught at most colleges, sixth forms and universities. Often they do tend to leave out the Nand Cat specifically - we have no idea why...
We don't yet sell an Xor Cat, Nor Cat, Or Cat or And Cat. If there is sufficient demand for them though, we'll make sure these feline gods and godesses of eternal logic make their majestic, non-caring way on to an appropriately logical cat t-shirt.
This t-shirt is inspired by the Nand Cat drawing that has been floating around the Internet. It depicts a cat which has the body of a Nand logic gate.