She: “When will the train come?”
He: “When the dog will bark!”
She again: “When will the dog bark?”
He then: “When the train is coming!”
Second try:
She: “What time will the train come?”
He: “That time the dog will bark!”
She again: “What time will the dog bark?”
He then: “That time the train is coming!”
Third try (more scientifically):
She: “How long will it take until the train arrives?”
He: “That amount of time it takes until the dog will bark!”
She again: “How long will it take until the dog barks?”
He then: “That amount of time it takes until the train will arrive!”
Fourth try (even more scientifically):
She: “How many units will pass on my clock until the train is coming?”
He: “That depends on the amount of time your clock will rate until the dog will bark!”
She again (wrathful): “What is the amount of time my clock will rate until the dog will bark?”
He then (subtly): “That amount of time it takes until the train will arrive!”
Last try (using latest scientific spelling):
She: “Do you know the duration until the train is coming?”
He: “That depends on the notion of ‘duration’!”
She again (wrathful): “‘duration’ is the number of units counted by my clock, don’t you know that?”
He then (subtly): “Yes, I do know!”
Poster Einsteins definition of a clock's display
Data OtherNameForTrap