Pirate Moo Birthday Card £1.50 Quantity: at £1.50 each Add To Basket 24 in stock. Tweet Happy Birthday to MOO! And what better way to say it than with this MOOtastic birthday card! Pirate MOO has taken a break from treasure hunting and built a sandcastle complete with Jolly Roger flag! Udderly MOOverlous! Each card is BLANK inside and comes with an envelope as standard. If only ordering cards use FREEDEL in the checkout.