Im on the phone (an important business related call) and some woman comes barging in the door, slams a $50 note on the counter and says "I want you to change it".
Now I was obviously in the middle on a conversation and had to exuse myself. I said to the woman "excuse me, Im on the phone i'll be with you in just a tick" to which she blurts out "I dont care. Change this now!".
I responded with "Sorry, no can do" and I picked up the phone again and said "sorry bout that mate, where were we?".
The woman stormed out of the shop in a huff and i hope i never have to see her fugly mug again!