This was an actual short conversation I had at Charing Cross after my ticket failed to worked the barrier.
Gateline Assistant: "Could I see your Railcard as well Sir?" (a perfectly acceptable request)
Me: "Certainly. Here you go."
Gateline Assistant: (examines card, and as he opens the barrier, says...) "You don't look disabled."
Me: "You don't look like a doctor."
Off I walk.
Gateline Assistant: "Could I see your Railcard as well Sir?" (a perfectly acceptable request)
Me: "Certainly. Here you go."
Gateline Assistant: (examines card, and as he opens the barrier, says...) "You don't look disabled."
Me: "You don't look like a doctor."
Off I walk.