And then you ask them what their name is and they tell you the drink instead

Or they point at the drink that’s theirs but there’s 6 drinks waiting. Or they mumble so quietly that you can’t hear them and have to ask for their name 5 times. Or my very favorite- they order to the wrong store and are mad they’ve had to wait so long for drinks that you never received but they say nothing about it even though you ask if they ordered!!!