After a protracted and tiring drive all through the night time…
… the motive force decides to tug over on the aspect of the highway to take a nap.
A person knocks on the automotive’s window and this wakes the motive force from his sleep. The person asks the motive force what time it’s.
The driving force appears to be like at his watch and replies, “It’s 4:30am” and goes again to sleep.
After some time, one other man knocks on the automotive’s window and wakes the motive force from his sleep. This man additionally asks the motive force what time it’s.
The driving force replies “It’s 4:57am” and goes again to sleep.
Positive sufficient, after some time, once more, one other man knocks on the automotive’s window and asks the identical query.
The driving force, now aggravated, replies, “It’s 5:20am”.
He picks up a bit of paper and writes in daring letters, “I have no idea what time it’s”, sticks it on the automotive’s window and goes again to sleep.
The driving force is once more woken from his sleep by a knock on his window.
The person knocking on the window says,
“It’s 5:35am, you’re welcome”.