At the risk of offending you lovely people, I thought disabled people were meant to be treated equal? Why can't someone in a wheelchair wait in line with everyone else? That's what tends to happen in our supermarkets. And pregnant women? If they're fit enough to do the shopping, they're fit enough to queue.
The person who needs a punch in the face is the person who decided disabled people need a special checkout so they don't have to queue up with riff raff able bodied people.