The Irony of the Actor's Apparel
Fusco and Gomez-Pena wear a mixture of costume Native American pieces like grass skirts and contemporarily iconic American clothes like Converse shoes. The combination of these two themes makes each seem absurd. In any other context, either of the halves of these outfits would seem perfectly acceptable, but together they make each other look ridiculous. They're incompatible on every level because they come from such drastically different cultures. For example, Americans dress for social status and follow trends, but the natives have traditionally favored practical, hand-made clothes.
The Irony of Humiliation
Both actors/authors of the exhibit are subjecting themselves to a vast amoung of humiliation in their participation in the act. They are taking the role of the oppressed upon themselves in order to call attention to the fact that it's oppression. They become the very thing which they are advocating against, which is the disrespect of indegenous cultures.
The Irony of People Living in Cages
When attending a fair or convention or an event of that kind, a person typically expects to see some kind of petting zoo or cages with animals or some element of the animal kindgom present in the entertainment. At the exhibit in question, folks were in for a shock. Humans invented the cage, so it's strange to see them inside one. Fusco and Gomez-Pena are playing with the irony of locking people up for amusement, not in prison like we usually associate confinement. Their confinement has nothing to do with punishment. They're there for laughs, basically. They play the role of animals in this exhibit, reducing the actors to their biological impulses and denying themselves basic human rights.
The Irony of the TV
The exhibit features a TV which both actors watch periodically throughout the act. This feature is ironic because the television is intended for entertainment, but the actors themselves are the entertainment for the audience members. They're adding an additional level of irony to the situation by participating in an act of which they already are the subjects: amusement.
The Irony of Associating the Exhibit with a Fake Native Tribe
The exhibit is supposed to feature two natives of the Guatinau Island, a fictional place. By assigning their character's heritage to a made-up place, Fusco and Gomez-Pena are essentially predicting the future. They present the idea that if another indegenous tribe was discovered today, they would fare no better than all the others. Even today they would be mocked and made into circus exhibits.
