Originally originating from the game WideWorld (where when a 6 is rolled the players are moved on the weather vane across the board, invariably where they do not want to go), weathervaned means to be generally beaten, owned or pwned, often unexpectedly.
1
Jeff: I'm only one square away from winning
Andrew: (Rolling a 6) WEATHERVANED!!!!
2
Reginald: Hullo, may I join you in partaking in this game of basketball.
Jamaal: No. (Hurling ball in Reginald's face) WEATHERVANED!!!!!!11!one!
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.
"Base we've got some square groupers floating outside of Miami harbor."