My ex (who owed me an amount of money we never quite agreed on) bet me that I couldn't get down to a size 12 (UK) for his birthday. I lost 4 stone in 4 months and got my money.
Fool! Give a woman a place to stand (motivation) and a lever long enough (reward) and she'll move the damn world, baby.
Now, anyone got two grand to bet me this time round?