A sexual position involving 3 members: 2 men and a "lady". The two men plug the woman from two sides, one getting oral, the other getting butt or vagina. While DPing this said woman, who is bent over so that she faces the floor/bed/pooltable, the two men have an armwrestling match on her back. Hence the name, over-the-top.
Timmy, Tammy, and Tommy enjoyed a nice round of over the top before going to school.