Use the word cheesy to describe something that's cheap or badly made. You might hope your fake Rolex watch will impress your friends, but they're bound to see how cheesy it is.
A really horrible motel room, with shag carpeting and strange art on the walls, can be described as cheesy, and so can a badly-written, sloppily made television movie. Cheesy is a great informal way to talk about shoddy or slightly unpleasant things. It comes from late 1800's United States university student slang, which also included the term cheese, which meant "ignorant, stupid person."