Sheep = Knight T-Shirt
Nine Sheep = one Knight is a reference to Mayfair Games' hit board game, Settlers of Catan, and how many sheep resource cards (and only sheep) it would take to buy a Development Card, which we all know usually turns out to be a Knight.
Have you got wood for sheep?
Artist: Ray VanTilburg/Mayfair Games
Screen printed on a Maroon 100% Cotton T-Shirt, in the USA.