inescapable logical consequence

I feel your pain, having today received my first ever negative Ebay feedback, from a complete fuckwit who expected me to conform exactly to his wishes including giving him a refund for something he was refusing to return to me. Really didn't seem to get the fact that behaving like you're on the make is not a good way to inspire goodwill in others.

Oh and also: cunningly-designed mug (http://www.gear-zone.co.uk/eshop/Aztec-05L-Shaped-Mug---Special.html).