Kidney bean
A kidney bean was a type of bean commonly found on Earth.
A joke Data told Geordi La Forge in 2364 pertained to the purchase of kidney beans, and went as follows:
A man goes to a store to buy some kidneys. He says to the shopkeeper, "I'd like a pound of kiddillies, please." The shopkeeper says to him, "You mean kidneys, don't you?" The man says, "I said kiddillies, diddle I?"
La Forge did not find the joke particularly funny. Upon further discussion on the matter of the humor, Data later had a slip of the tongue when speaking of all the jokes he had learned, and inadvertently said, "Includling the kiddillies…" which La Forge did find funny. (TNG: "Code of Honor")