The whistle is un-jammable. In high-stakes sports moments, a referee can blow as hard as possible without the whistle choking. The sound is authoritative and demands attention immediately.
If you carry a pocket knife or a flashlight, you should carry one of these. The modern pea-less whistle is a perfect example of "buy it for life" technology. It costs less than a fast-food lunch, has no moving parts, and could save your life. cool whistle
Never whistle to get someone’s attention angrily . A cool whistle is always playful or appreciative. And please — no spitting. The whistle is un-jammable
If you were referring to a specific toy or novelty item, let me know, but here is a detailed review of the (specifically focusing on the design pioneered by whistles like the Fox 40 and Storm ). If you carry a pocket knife or a