Perhaps the greatest heckling and anti-heckling exchange between performer and audience member ever was revealed in a recent nostalgia-fest. My first professional gig was taking over my dad's guitar spot in a band when I was fifteen, and most of my awesome (and unbelievable) touring stories to this day are from those next couple of years. But I hadn't heard many from the time my dad was in that band.
It seems that one night some drunken lady right up front would not shut up, so the bandleader said to her, "Hey, lady - how much do you charge to haunt houses?" She paused pensively, and asked "How many rooms?"