What's black and sits on top of a staircase? Stephen Hawking after a house fire.
Aw man. Why you got talk about Hawking like that.
I'm implying that physically disabled people are stupid and can't do anything
Implying that a disabled person is helpless and would not be able to escape a house fire is pretty messed up. Disabled people have a tough enough life as it is, and making fun of them and being insensitive to them is only making it worse.