I should be embarrased… but I don’t understand

Margaret wrote a great piece called “Dumb Stuff the Gringa Says” in which she catalogs some of her most embarrassing (or funny) linguistic faux pax. She then invites her readers, and she has quite a few, to comment with their most embarrassing (or funny) linguistic moments in a second language. I thought it was a … More I should be embarrased… but I don’t understand