We have cards for all tastes from mild to wild and everything in between. Well there's no doubt where on the smut scale that this card lies, yes it's utterly and completely right at the filth end. You would never send your mate some sloppy sentiment so why not treat him to some vulgar expletives instead - you know he'll thank you for it and might even get a bit emotional.
A birthday card with a smartly dressed businessman looking at the camera. Text on the card reads Happy birthday you big cunt