An extension of the eiffel tower, with the addition of one female. The girls face each other on all fours whilst kissing. Simultaneously, the males are plowing the females from behind and touch hands above the females, resembling the Tower Bridge in London.
Guy 1: Dude, check out those two hot chicks at the bar.
Guy 2: Don't even think about it bro, me and Sam pulled the ole Tower Bridge on them last week.