I don't consider hiding under stairs as a form of cheesing. Cheesing, in my mind at least, means completing the activity by a means of doing something that wasn't meant to be done that way. Hiding under the stairs? It's a pretty large area. Kind've like we were meant to go there if we decided. I don't think at all that hiding under the stairs is cheesing. It's totally different than clutching into the ceiling or any other cheesing way.