Ball Point Pen

When NASA first started sending up astronauts, they quickly discovered that ball-point pens would not work in zero gravity.
To combat this problem, NASA scientists spent a decade and $12 billion developing a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to over 300° C.

The Russians use a pencil.

Chuck Norris Crossed The Street

Chuck Norris once crossed the road- No one has ever dared to question his motives.

Jones Syndrome

Patient: Doc, I can't stop singing, "The Green, Green Grass of Home."
Doc: "That sounds like Tom Jones Syndrome."
Patient: "Is it common?"
Doc: "It's Not Unusual."