You would need 4 People, 2 male, 2 female.
The females will 69, while the males are both going in from behind.
The Males must look into each others eyes, and high five.
For extra fun bring in 2 more people and have them run into you and tip you over.
"DUDE did you hear!? Last night Ryan and Jeff we're Eiffel Towering these two chicks." -Man 1
"Thats called the Twin towers (sexual) NOT the Eiffel Tower, There we're 2 chicks!"- Man 2
man 1- "ohh my mistake, now I understand when they said 2 other people tackled them"