Don't compare yourself to others - they are more screwed up than you think!

So i'm in Halfords for a tin of Hammerite. Having located this item within seconds and seeing only two people queueing at the till I assumed I'd be out of there in no time.... WRONG!
The first chap being served produces his Visa card, puts it in the proffered device and oh bugger, this numpty has forgotten his pin number. Now I've seen this on the odd occasion where Mr. Numpty has been politely informed that he cannot make a purchase without his pin so has to pay cash or bugger off, and rightly so. In this case we are dealing with
  Mr. Chav Numpty who has just had a stereo fitted in his black Corsa chavmobile in the hope that banging
  out some serious Gangsta Rap tunes will turn a skinny, pizza faced smackhead into a babe magnet.
  Anyhow, it's obvious that somehow the lass on the till is going to have to process the card somehow because
  the kid has no cash. The minutes are now crawling by as she gets onto a support line to help her with this
  baffling new technology. Meanwhile the queue is starting to snake out past the satnavs into oils and lubricants territory, armpits are getting sweaty and nerves are fraying.
Then, through the door appears a saviour. The talented chappie who had fitted the stereo demonstrated phenominal multitasking skills by manning the second till. Now you may recall that there were two people before me so the rest of us in the can-can line shuffle back to let the next chappie get served. He's only got a six quid bottle of some soapy stuff, great, nearly out of here. Does he reach in his pocket for a crumpled fiver and a bit of change, does he bollox! Out with the Switch card. After the merely mild irritation of watching numpty no.2 insert his card upside down then back to front before successfully remembering the year of his birth for the pin number, yours truly is getting served.
I eagerly approach with a tenner in my sweaty fist.
"That's £9.95 please sir, sorry about the wait"
"S'ok mate", through gritted teeth.
Sweaty tenner is duly offered.
"Oh, the till's empty, hang on a minute"

"KEEP THE FUCKIN' CHANGE!!!"