Alternating Tread Stair Looks Painful If You SlipS

Not only can you possibly slip off the side and cut a gash in your face on these crazy tread stairs, you could slip and fall crotch first onto the middle bar.

Very useful for keeping fatties off the 2nd floor, as well as making sure your children NEVER RUN UP THE STAIRS. That is, if you're still viable to have children after all those accidents. [Costel21d via Treehugger]