Service With A Smile

Everyone has bad days but I especially hate it when I'm stressed out and in a particularly foul mood and someone comes up to the Ref Desk and demands a smile.  Yes, D-E-M-A-N-D-S that I smile at them.  I speak in a pleasant manner and offer to assist them but that isn't enough for some people, er, men.  Are they flirting? Do they think they are cheering me up?  No! It only ticks me off more. So back off gents and let me be!