didn't inquire about a "bathroom."
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Anxiety neurosis must have prompted: "If a bus falls in the river, will it float?"
Slave of the hot stove: "Is there a hold-up on the Central Line tonight?"
"That means the so-and-so's in the pub again."
Apart from potty questions, the inquiry team occasionally receives a welcome word or two of appreciation. For instance: "I enjoyed your sightseeing tour very much because the driver was ever so familiar."