Just that really......
Mine was a few years ago and I'm still
whenever I think about it.
My youngest had started primary school a few months prior to the event and she had got a bit friendly with one of the other children in the class and as a result I had got to know their mum quite well, in terms of chatting in the playground anyway.
We had storm one morning on the school run and as it was much closer to my house than hers I invited her back for a cuppa till the storm passed. I put the kettle on to boil and then went to the loo, then had to take an "urgent" phone call from my eldest school for some reason or other, can't remember what exactly and it certainly wasn't an emergency.
When I was upstairs I heard some clattering around in the kitchen and then heard a sizzling noise.
When I went back downstairs she was frying bacon. She hadn't asked, I hadn't offered and it meant she had gone through my fridge and cupboards the first time she had been to my house. When I asked what she was doing she said she was hungry and hadn't eaten that day 
Safe to say I didn't ask her to come back after that!!
What CF behaviours have others shown in your home?