TNA Wrestlers -- Lost Bet Leads to Sexiest Twerk-Off Ever

Losing a bet never looked so good -- and you can thank TNA wrestlers Brooke and Robbie E, who busted out an impromptu twerk-off in the middle of LAX this weekend ... after Robbie lost a hilarious wager.

The twerking went down right outside airport security on Saturday -- Brooke told us she bet Robbie he couldn't take 4 straight shots of tequila in 3 minutes without throwing up ... and she was right.

The punishment was a shameful public twerk sesh in front of everyone at the airport, and lucky for everyone in the world ... Brooke demonstrated her moves first.