What a strange piece of advice.
Logically it should be the other way around - all budding cyclists should be given a large, powerful air horn, and told to honk loudly when approaching cars, to let them know that we (superior beings and all) would soon be coasting by with a big fat grin on our face.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett