What's black and sits at the top of a stairwell?

A paraplegic after a house fire.

What's black and sits at the top of a stairwell?

A paraplegic after a house fire.

What's black and sits at the top of a stairwell?

A paraplegic after a house fire.

What's black and sits at the top of a stairwell?

A paraplegic after a house fire.

What's black and sits at the top of a stairwell?

A paraplegic after a house fire.

What's black and sits at the top of a stairwell?

A paraplegic after a house fire.