alligator n. a piece of a rubber automobile tire (along a roadside). (source: Double-Tongued Dictionary)
Further reading
Don’t let your alligator mouth overload your hummingbird butt! is a more picturesque way of saying “Don’t boast!” This is part of a complete episode. Transcript of “Your Hummingbird Butt” I came across some excellent advice the other day. Don’t let...
Our conversation about slang terms in various countries to denote someone who’s a tightwad prompts a Minnesota listener to leave a message with his favorite term along these lines. He likes to say that stingy people have alligator arms that won’t...