Stag Theater is a performance piece that requires the participation of a large group, ten to twenty people. The performance is initiated by calling people to gather near the entrance of the portable theater. After a volunteer is selected the remaining spectators are asked to enter. Upon entering the group will notice that the extruded plastic walls and ceiling are quite different from the inside. The interior is dimly lit from the outside through the irregular thickness of the plastic. Standing at the back of the theater is an 8mm projector. The group must tightly cluster themselves into the corners of the theater to stand clear of the projection. Meanwhile, outside still, the volunteer is asked to put on a white t-shirt. They are given simple instructions that they are in control of the situation and can end the performance at any time by simply leaving the theater. The volunteer will now enter the theater and stand blocking the exit. The projector is then started.

The film is from the early 1950s. It is black and white, and silent, only the rhythmic clicking is heard from the projector. The first half minute is nondescript featuring a black woman and white woman conversing. The film drastically changes when a nude male enters the frame. At this point the group realizes that they are watching a stag film across the chest of the volunteer. The following reactions differ from group to group. Discomfort usually grows the longer the volunteer subjects the group to the situation. The film gets more graphic the longer it runs, the temperature and humidity rise as the air becomes stale from the number of sealed in participants. Performances can last upward of fifteen minutes but usually conclude between five and ten. Reactions have varied widely seemingly dependent on the age range, and familiarity of the group. Discomfort, anger, dismissal, laughter, humors comments and complete silence are all past responses to this unusual situation.