Its a sexual term to describe a woman when she is in an excited sexual state. Her clit and labia become erect. Fergie's song parallels this to a the two sides of a draw bridge coming down.
From Fergie's song:
How come every time you come around, my London London bridge wanna come down....
How come every time you come around, my London London bridge wanna come down....
by jctimothy February 4, 2007
Get the london bridgemug. by katie fox February 13, 2005
Get the marcie and londonmug. A sexual act in which several large cocks gather around a girl's face, aiming for the mouth, but when they go off they instead get their cum into the woman's eyes, blinding her.
by Blokk November 7, 2013
Get the London Eyemug. by birdman May 23, 2004
Get the london fogmug. by Rugby jim March 3, 2017
Get the london colneymug. by Rasqualius November 29, 2013
Get the Shopping in Londonmug. A marketing campain to get people moving to London. Also a section in the paper for all the poms who live in Sydney
by lulu March 7, 2005
Get the London Callingmug.