I used to work at a grocery store. One day I was stocking shelves and started to work up a sweat so I took my jacket off and hung it over the handle of the cart I had with me. So I'm working, and after a bit I see this lady approach me out of the corner of my eye. She hasn't said anything so I figure she was needing something from the shelf I was working on.
I turn to look at her.
Me: "Can I help you with anything?"
That's when I notice that she wasn't waiting for my help, but was standing there with my jacket held up in front of her, inspecting it.
Customer: "Is this for sale?"
This struck me as odd because we didn't sell any clothing, just food.
Me: "Oh, that's mine."
I laughed and held out my hand, but she ignored me entirely and continued to inspect my jacket. She turned it this way and that, and looked at the size tag.
C: "How much is it?"
Me: "It's MY jacket. It's not for-"
Dumbfounded, and frustrated that she isn't listening to me, I watch in horror as she goes to try my jacket on when she's easily twice my size. She gets an arm partway in and is struggling to make it stretch to put her other arm in. And what do I do? I step around her and strip my jacket off of her. She tries to hold onto it and I jerk it out of her hands.
C (appalled): "I'm going to buy that!"
Me: "Ma'am THIS IS MY JACKET."
A sudden wave of understanding finally floods her face.
She says: "Oh."
And then simply walks away.