Top definition
A sexual act in which three nude persons of either sex form a human pyramid. A fourth participant--"King Tut", generally male (or female with a strap-on)--then cartwheels into position behind the pyramid such that he or she ends up doing a head stand, penetrating the topmost member of the pyramid with the penis or dildo and fingering the bottom two members with his or her free hands.

Oftentimes a fifth participant is required to stabilize King Tut in his maneuvering.
Jim, Jackie, Jill, and Tyrone all did Tut's Pyramid this weekend. They tried to switch places as much as possible, but they didn't have a strap-on. Good thing Agnes was spotting.
by TheSassman February 07, 2008
Happy St. Patties Day!