(you're sitting at your desk at work, a completely dull and quiet office, and suddenly one of your coworkers belts out the chorus to love is a battle field and diligently goes back to work)
You: RAF o.O
Or.
:How was your day today?
:Oh it was cool...but today when I was walking down the street an old lady ran up to me and hit me with a loaf of bread. I smelt like a sandwich all day.
:RAF man...RAF.
I'd add, subtract, multiply and divide, and was grateful i had no need to cos, sine or graph functions or whatever gizmo did, because, having been turned down by RAF...