For those with a checkered past or a wicked sense of humor we recommend the selection from Glasgow artist David Shrigley's line of comical cards presented by the British design collective, Polite. Granted, there's nothing actually polite about Shrigley's cards, and even less that's sweet.
The cards feature captions like, "It's Getting Worse," "Leave Me Alone You Horrible Freaks," and "At The Moment I'm Thinking About Germ Warfare." Cutting, random and plain funny, it's exactly the opposite of your Hallmark variety and we appreciate the charming whimsy about them.

151mm greetings card cello wrapped with envelope.

"I do illustration, and the books that I make aren't necessarily supposed to be in the art section. I don't know what section they're meant to be in exactly. I think they're maybe supposed to be beside the till."
David Shrigley, Interview with Gavin MacDonald, Typocrat, 2004.