Ouch! We've all heard of the tooth fairy. But the 'testicle fairy'!? Yes, that plodding little night sprite exists, at least on this Funny Birthday Card. While the blonde tooth fairy flutters over a sleeping boy and his tooth in a jar, the balding testicle fairy ambles into the same bedroom to reward the dog with its testicles waiting in a glass of water. Nuts? Nope, just a colourful, hilarious greeting card with which to grant someone special a special birthday wish.