Sarcasm v. Sexism

hman:

Sometimes when I read Metropolitan Diary items on Mondays, I don’t necessarily ‘get it’ because they involve people I don’t have anything in common with and don’t feel like understanding.

But this - this is just dumb, right?  I’ve read it six times now and can’t make any sense of it.  And I love sarcasm!

“DEAR DIARY:

Recently on a beautiful day, I was walking south on Fifth Avenue. The street was very crowded, and while we were waiting for the light to change at 49th Street, the woman behind me said in a distinctly British accent, “I wonder where the diamond district is.”

I thought I would be helpful, and turned around and said, “Oh, that’s on 47th Street.”

Her male companion replied in an equally distinctive British accent, dripping with sarcasm, “Well, thanks a lot.”

J. J. Levine”

(NYT Metropolitan Diary)

Consider the mystery explained!