whistle-tip
n.— «A “whistle-tip” is a device that is applied to, or is a modification of, a motor vehicle’s exhaust pipe for the sole purpose of creating a high-pitched or shrieking noise when the motor vehicle is operated.» —“Exhaust Systems: Whistle-Tip Prohibition” California Department of Motor Vehicles Jan. 1, 2004. (source: Double-Tongued Dictionary)
Further reading
Understanding the varieties of conversational styles can mean the difference between feeling you’re understood and being insulted. “High-involvement” speakers interrupt or talk along with someone else to signal their enthusiasm...
Since the late 19th century, the word scrumbunctious has been used to describe someone who is energetic or high-spirited. Scrumbunctious is probably a portmanteau of scrumptious and rambunctious. This is part of a complete episode.
Related