^ According to UrbanDictionary, these are the two definitions. You choose whether you want to believe it or not.
1. "Its actually when two guys are doing a chick and she is giving a blowjob and getting it doggystyle at the same time. The guys then proceed to give each other high fives."
2. "The true 'London Bridge' occurs when two girls are being done doggy style, facing each other and making out while the two lucky men high five over them."
^ According to UrbanDictionary, these are the two definitions. You choose whether you want to believe it or not.
1. "Its actually when two guys are doing a chick and she is giving a blowjob and getting it doggystyle at the same time. The guys then proceed to give each other high fives."
2. "The true 'London Bridge' occurs when two girls are being done doggy style, facing each other and making out while the two lucky men high five over them."