I'm half an hour from home for the sole purpose of nipping in to the post office (just inside the supermarket) to post a letter which absolutely has to go today. I've only gone and bloody left my blue badge at home.
I've pulled into the nearest regular space and am looking at the distance and there's no way I can manage it today. It was going to be a struggle to get from the disabled spaces as I'm in so much pain at the moment.
And just to rub salt into my wounds, the reason the badge isn't in the car is that I took it into the house to photocopy it because the letter I'm sending is to dispute a parking ticket I got for parking in a 'no parking zone'. The traffic warden didn't take into account my displayed badge which means I can park there. 
So park without a badge for 5 mins and risk the wrath and hatred of everyone who sees me, or an hours drive to fetch my badge?