Pedestrian goes up to cop to ask the time:
- Please officer, could u tell me what time it is?
- Of course I've got it written down here. It's 8 o' clock.
- Thank you, but please tell me, what do you say when it's not 8 o' clock?
- I say that I don't know what time it is.
- Aha. So how do you know whether it's 8 o' clock or not?
- Well, I got it written down here!
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