Toe

John's car had broken down, so he waved at the first car that came his way. When the car stopped, John said to the driver, "Excuse me, could you possibly give me a lift to the nearest garage?"
"I'm sorry" said the other motorist, "but I'm a chiropodist (foot doctor) on my way to my surgery and I'm late already."
"Fine," said John. "In that case, can you give me a tow?"