10. The ABC Game
The Rules: Name something that you see that starts with the letter "A". Name something that you see that starts with the letter "B"." Continue through the entire alphabet. First person to "Z" wins.
Likely, this contest will be in a dead heat until you get to the middle of the alphabet. You'll probably slow down a bit in "J,K,L" territory, and only the most observant among us can roll through "Q" without hesitation. We recommend brushing up on your bird watching game so you'll know a quail when you see one.