A new type of blood discovered by Charlie Sheen. People who have Tiger Blood are immune to addiction and tend to be winning.
Doctor: Bob, you can't go on like this much longer. You take drugs every day and sold your dog for weed. You must go to rehab!
Bob: Nah, I got Tiger Blood.
Doctor: Ah, understandable.
Teacher: Well boys, we've got blood types A, B, AB, O and Tiger Blood.