n. A turd or poop that when deposited into the toilet, doesn't quite reach the water in the bowl. The specimen usually remains in this location through several flushes, on display for the next few users of the toilet.
Don't use stall three in the office bathroom - someone left a display model after lunch.
Jim, you should really get a high-powered toilet flusher. Every time I use the crapper, I leave a display model.