sausage three-way 

Any situation, usually but not necessarily involving three parties, which can be seen to have reached a critical point.

We had to invite a fourth person, or else a lovely evening would devolve into a sausage three-way.

The man, upon walking in on his wife and her lover, was heard to exclaim, "Well, this is quite the sausage three-way!"

As cops tried to clear off the mild two-car fender bender, a third car carelessly careened into the scene, thus turning the routine accident into a real sausage three-way.

sausage three-way by jwillmo October 3, 2007