Her: “So you just sold a pair of wheels and bought some hubs?”
Me: “Er, yes.”
Her: “Why?”
Me: “So I can build some wheels.”
Her: “But you just sold some wheels.”
Me: “I needed the money to buy the bits for the new wheels.”
Her: “Why didn’t you just keep your existing wheels and save your money.”
Me: “Ummm…”
Her: “How much were the hubs?”
Me: “What shall we have for dinner?”