Alien theater

My friend Brendan was directing a play he'd written about an alien invasion, and I was part of the cast. It was a short, funny, audience-gets-involved kind of play, and I played an alien queen who was part of a group of people who surprised the audience by coming out of nowhere and shooting at them with fake lasers. People enjoyed it. I remember at some point, my one line was to say "Oh no, I think we're out of ammo," at which point some selected members of the audience were equipped with fake weapons and shot at us.