Going to the post office can be amusing at times.
Today I went there during lunch time to send a reviewer copy of my book to Daunt Books, a big bookshop in London. I put a promotional sticker (please see the photo) on the parcel. The counter staff asked me what it was and I started to introduce my book and try to sell it to her on the spot.
Before I could finish my whole sales pitch, a queue of grumbling lunch-time customers behind me made themselves known to me. Afraid of my own safety (and theirs), I took the hint and left my perspective reader with a copy of my promotional postcard and walked out there with my head held high.
A bigger drama was avoided. It may not be that easy next time. :>