Definitions by Mack-VII

OOF 

Official On Field hat. A hat that the majors in the MLB wear while they are on the field. Authentic. Almost 100 percent of the time the hat is the same colors as the team colors. *Look for the full sticker across the bill.*

1. Quan, Taurean, and Jerry I just got that new Yankees OOF.
2. Mack-8 do you see that guy with the purple and orange Atlanta Braves hat on..... WTF IS HE THINKING?!? He needs an OOF.

OOF by Mack-VII March 25, 2010