Take my 2yo daughter on the ride to nursery in the mornings and she has recently taken to yelling "Dooooggggie" or "Birrrddies" at the top of her voice when she sees said animals. We've been getting a few funny looks from pedestrians who obviously resent being woken up...
Four years ago, her elder sister was in the same bike seat and became responsible for me buying my first pair of bibshorts - on the same journey her favourite game was to pull my shorts down as I was cycling, giving local residents a lot more than they bargained for...