Eric wasn't paying attention to what the chick was doing, because he was already busy with another ketchup bottle. And another wall. And then, to keep with the Slayer theme, Eric very diligently wrote: 'I AM BECOME DEATH, DESTROYER OF WORLDS'. Too bad since he was short it wasn't even that up high. But it looked awesome when the ketchup started running down the wall again.
By then there were only about 5 people in there, excluding the chick who'd prompted all this and the staff. And for those 5 people, Eric had a present. "Ketchup shower everybody!" He said sing-song like, and squeezed the bottle empty on all of them. It was like Carrie, only less ugly. And by less ugly, he meant himself. Sheesh that Carrie chick was unfortunate looking.