Disclaimer - I think I was the pinnacle of reason. 
So, today was bin day. I was leaving for work about 10 minutes ago. I was about to move the recycling bin, when I realised that the bin people had swapped our bin and next door's. NDN had already brought our bin into their front garden.
I knocked on their door - no answer. So I did, what I would refer to, as the only sensible thing: I swapped the bins back and left.
They will never now, the bins are both intact, surely it would have been more annoying to seek the neighbours permission to swap back.
But 2 years on mumsnet made me wonder, was ibu? Was I trespassing or maybe even stealing? 
Out me out of my misery mumsnet.