Stevie and a young blonde girl are sitting next to each other on the bus. Stevie asks if she would like to play a fun game.
The blonde ignores him (nothing new here!) and continues to look out of the window.
Stevie persists, saying that the game is a lot of fun. "I ask you a question, and if you don't know the answer, you pay me only 50 pence; you ask me one, and if I don't know the answer, I will pay you £20." This catches the blonde's attention; and, to keep him quiet, she agrees to play the game.
Stevie asks the first question. "What's the distance from the earth to the moon?" The blonde doesn't say a word, reaches in to her purse, pulls out a fifty pence piece, and hands it to Stevie.
Now, it's the blonde's turn. She asks Stevie, "What goes up a hill with three legs, and comes down with four?"
Stevie uses his laptop, searches all references. He uses his mobile to call all his Essex mates, all to no avail. After twenty minutes of searching he finally gives up and hands her £20. The blonde takes the £20 and continues looking out of the window.
Stevie is going nuts not knowing the answer. He nudges her and asks, "Well, so what goes up a hill with three legs and comes down with four?"
The blonde reaches into her purse and hands Stevie a fifty pence piece.