I've posted this before and no one ever gets it, but I love it.
This isn't exactly a one-liner, but slick's comment above made me think of this joke. I, too, love this joke and no one ever gets it. Actually, I use this joke as the litmus test for men ... if he gets it, he might be potential date material. If he stares at me like a deer in the headlights, it's hasta la vista, baby.



Did you hear about the agnostic, dyslexic insomniac?

He stayed up all night wondering if there was a dog.