Contagious Whistling

I've discovered something over the years. Yawning isn't the only thing that is contagious. Whistling is as well. Every time I get the urge to whistle, it seems that someone else joins in within about 5 seconds. This makes it really awkward to continue whistling. Sometimes I can't even remember if I started or if I am following the other person. Give it a try sometime. If there are people around, start whistling and see if someone else starts as well.