Mostly True Memoirs

It was an awkward English lesson.
My beginning online student told me, in halting language, that he had recently visited the United States.
He took a trip to San Diego.
And he took the opportunity to cross the border and visit Tijuana.
I asked him what he thought of Tijuana.
He paused for a moment, searching for the right word.
“Prostitutes.”
Oh.
But of course.
What else would be said in an awkward English lesson?
I quickly changed the subject.