Originally originating from the game Wide World (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!
by JuPitEer November 22, 2009
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A politician who has a frequent change of opinion. Flip flopper So named because both always change direction.
Mitt Romney has become a weathervane since running for president.
by Ted Merriman October 29, 2007
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The act of a Dom making ones gimp sit on a dildo at the peak of a roof and pointing towards the direction of the wind.
According to that weathervaning gimp, the wind is from the east today.
by Twat pringle May 5, 2022
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A petite sex partner who is so wet he or she can be spun around with ease. A spinner.
Mischa was so turned on the other night she was like a perfectly lubricated weathervane.
by Hobbs_fan January 18, 2012
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