There's a game kids play where you sit in a circle and a kid walks around the outside, naming each kid..."Duck...duck...goose!" and there's much running and screaming and falling and skinning of appendages.
My whole life, I head "Duck duck goose."
Moved to Minnesota, and about half my friends informed me that this game was, in fact, "Duck, duck, gray duck."
Anybody got any other variants (or have even heard of the gray duck thing?)