It's wrong to make rude remarks to disabled people.
Greg is a greeter at Wal-Mart, and someone in a wheelchair is coming into the store.
Greg wants to say something to the man.
Greg tells the man that if needs anything, don't feel afraid to ask.
Greg asks the man if he happens to know Stephen Hawking.
The man feels better, and Greg feels like a good person.
The man is offended and goes to report Greg to his boss.