What is the strangest behaviour you have witnessed in a charity shop?

[CharityShop]

I help out at a very small charity shop. We have no changing room, so customers can return items if they try them on at home and they don't fit.

This morning, a customer didn't want to take a pair of trousers home to try. She took off her own trousers in the middle of the shop in order to try the trousers she wanted to buy on! Cue bemused looks from other customers!

Someone took a dump outside one in my town and used the donation stuff to wipe their arse ...I felt so sorry for the staff who arrived to work only to find that before they even unlocked the door and then they had to clean it all up and sort all the actual stuff donated. Some people are so disgusting and don't deserve to live on this planet imo

We had similar with a shop assistant refusing to sell DD (aged about 4) baby clothes because she told the assistant they were for her doll.

I was at the till waiting to pay for a top i wanted to buy.
The volunteer wasn't taking much notice of me though, but was instead speaking to another customer (a woman much younger, slimmer and taller than myself) - telling her that the item she was looking at would really suit her.
The volunteer then turned to me and said 'don't you agree, it would look great on her'
I said yes but was thinking wtf, I'm actually trying to buy something here...

That is ridiculous. Your money is as good as anyone else's. And I would imagine there is a huge turnover of baby clothing anyway.

I remember a thread on here where OP bought an item of clothing that was obviously not her size, and the volunteer made a comment about it.
I have a friend who is very large, and she once bought a teeny little skirt as she liked the fabric. She turned it into a journal cover.

Just remembered another one from many, many years ago - not in the UK.
I saw an old children’s bench produced by Ikea, pretty beaten up and scuffed, would definitely need sanding down and repainting. I asked the price at the desk and they had to price it on the spot, so spontaneously went for 20 euros. I replied that since the new price at Ikea was only 15 euros I wouldn’t bother, so the volunteer thanked me and said she hadn’t known it was Ikea, and put the price down to a fiver. At the point the customer next to me went on a total rant about how I was stealing from charity and I was morally obliged to pay more than it cost new. The volunteer and I just rolled our eyes while I handed over the money. I would normally never question charity shop prices or haggle, but this price was based on lack of knowledge and nobody with kids would have bought it at the original price. I’d have been perfectly happy to leave it there if they’d insisted on the 20, but it was a ‘move the stock on quickly’ kind of charity set-up. Mrs Ranty next to me was buying nice clothing priced at less than a euro - I should have hassled her to pay more too.

I volunteered at one as a teen and remember donations of trousers with huge stains in the bum area.
The old ladies always thought it were hilarious. I heard 'Hmm looks like someone's had a bad pooooo' more often than I care to remember.

A woman hysterically asking if anyone had seen her cardboard boxes which she had flatpacked and tied together. She had just popped them down for a minute and someone walked off with them!

I was volunteering at Scope charity shop. In comes woman asking for Christmas cards. I showed her to our cards selection. She asked if we sold ‘save the children’ cards. In Scope.