To be the life, and subsequent death of the party. Usually accomplished by bringing ample amounts of goon and sharing it with all your friends. Keg costume is preferred, but not essential when Isaacing.
Oh man, Griff got so shitfaced at the end of year party, he was Isaacing all over the place
1. Select a player (real or fantasy) during a sports draft to spite or anger one or more of your opponents because they had intended to select him/her.
2. Select a player (real or fantasy) during a sport draft to put one or more of your opponents at a strategic disadvantage.
1. Billy hate drafted Chad OchoCinco because he knew Sam had wanted him since he is from Cincinnati. Billy already had plenty of players to fill that position but wanted to make sure Sam didn't get him.
2. Billy hate drafted Peyton Manning because he was the only good quarterback left and he knew Sam had been planning on drafting him.