A few years ago, a mate of mine [Trevor] lost his leg when he was knocked off a motorbke, and his leg was crushed under a truck.
A while later, he took his car driving test, he had not had his false leg fitted at that time, so was hopping on crutches.
The driving examiner said "it says here, you have a disability, what is your disability?"

Trevor just looked at him, and said "Are you taking the piss?"