When faced with a daunting task, you decide to pass on doing it. From the childhood game of H-O-R-S-E. A game using a basketball and hoop between 2 or more players. The object of the game is not to spell the word, Horse. If you miss a shot, you have to take a letter and the loser is the one that spells the word horse first.
"Dude, I'm so hungover I'm going to have to take a letter on playing in that football game."
by toniwithaneye October 08, 2006