Trouble On Aisle Me

(Whilst I’m at work, I spot some friends of mine browsing the frozen food aisle. As it’s quiet and I have nothing that needs doing, I decide to say hello.)

Me: *to friends* “Excuse me, madam. I’m going to have to ask you to leave as you’re causing trouble.”

(My friends laugh at the joke. However, a lady nearby doesn’t find it funny.)

Lady: “How dare you?! They weren’t doing anything wrong! The staff here are very rude; I want to complain!”

Friend: “Grandma, it’s okay; we know him! He’s joking!”

(My friend’s Grandma gave me a dirty look, and has done so every time we’ve met since!)