Me (in grocery store, to man stocking shelves): “Hi, I’m looking for Worcestershire sauce?”
Man: “Ok. But…um…I don’t work here…”
Me: “Oh! I’m sorry! It looks like you were stocking the shelves with candles…”
Man: “No I’m just looking for a green one…”
Me: “Oh…um…ok…I…yeah sorry.”

And then I stopped talking forever.