Thank God It's My Friday. Expression used by one who takes off work on Friday. As a result, the emotion and joy associated with Friday is experienced on Thursday.
Person 1: You seem unusually happy for a Thursday.
Person 2: That's because I am taking tomorrow off. TGIMF!
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.