Quote from George in The Trip: Part 2
George: You know what I never understood? Why did they change the siren noise? When I was a kid it was always "waa, waa". You know, now it's "woo-woo-woo-woo-woo". Why did they do that? I mean, did they do some research? Did they find that woo-woo was more effective than waa? Jerry: Yeah, what about those English sirens, you know? Eee-aaa-eee-aaa-eee-aaa... Both: Eee-aaa-eee-aaa-eee-aaa... Police Officer: Hey!