I can't resist -

Sometimes on the commuter trains in philly, they check tickets and passes prior to the usual time they do and I'm still sleepy. So once or twice they hover over me, then say "do you have a ticket or pass" I say "yes, I have a pass"

They say with a puzzled look - "can I see it?"

I'm then tempted to say "Oh, I don't know, I'm not an eye Dr."

However, I pull out my pass and they move on....