What's below a flick?

Flicks are by definition shallow movies with no artistic value that are just made to gather popcorn-munching people in a theatre to make money, right? It's the kind of movie people like for being "just fun".

But what about flicks that aren't even fun and are critically panned by those same people, like Movie 43, A Haunted House, Jack and Jill, etc? What do you call them?