A meaningless, vaguely sexual term used by Fergie in her single of the same name, invented simply to stir up discussion about an otherwise forgettable and derivative song.
How come every time you come around my London London Bridge want to go down?
by Kevin Salinas July 27, 2006
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A foursome involving 2 girls and 2 guys. The 2 girls are on all fours facing each other and making out. Meanwhile each guy is behind one of the girls doing her from behind.
While visiting London Bob and John saw the London bridge where they met 2 girls who showed them the REAL London Bridge.. behind closed Doors
by Cooter King November 01, 2006
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A sex position in which a woman bends over backwards while receiving vaginal intercourse and giving oral sex simultaneously.
1.) Kristina Krohn has seen many a London Bridge in her day.

2.) The woman was found weeping on the side of the road. The police suspect a London Bridge.
by Eileen Bakanswallow May 05, 2007
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Similar to the Eiffel Tower but involving two guys and two girls. Each guy is doing each girl in the ass while the two girls are facing each other and are making out.
One time I saw a porno and it had the London Bridge
by AzzPounder May 27, 2010
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London Bridge refers to a woman's panties. When guy makes a woman's "London Bridge fall down", he is making her panties drop to the floor so that they can have sex.
In the song by Fergie of the same name they say, "How come everytime you come around my London Bridge wanna go down?" Which equates to "How come everytime I see you my panties end up on the floor and we end up having sex."
by Social Engineer13 September 06, 2006
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a woman having the urge to wanna pull down her panties for a hot guy, so many crazy meanings to the word that sickos have overlooked the fact that in the video, Fergie's is standing on the table and her panties show the British flag. the video shot really gives a pretty obvious hint if you think about her British panties, the man she seduces in the video, and the lyrics. it connects.
These crazy pseudo-porno definitions of Fergie's new slang would make Fergie's London Bridge stay up and relocate elsewhere.
by Mr. Bob Vious August 30, 2006
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A sexual position akin to an eiffel tower. Much cooler than the foursome brand, its threesome variant features two ladies and a gentleman. The gentleman will lie down on his back with his member erect. One lady will then mount his genitals, while the other straddles his face. The two ladies should be facing one another and may make contact, if desired. The gentleman will perform intercourse and cunnilingus as applicable. If they choose, when approaching climax, the participants may exclaim "the London Bridge is falling down!" as they will no doubt be so fatigued when they finish, that they will collapse upon one another.
Frank took his two lady friends into the back and performed a London Bridge. What a lucky guy!
by TCoss November 15, 2006
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