A conversation with my parents yesterday afternoon

Dad: Has your mom committed random acts of decoration on you yet?
Me: Um, do what now?
Dad: You know how people decorate trees on the roadside this time of year?
Me: Yes.
Dad: Well, your Mom does that with other people's houses.
Me (to Mom): You what?
Mom: I have too much stuff, so I've been taking little things from our house and leaving them at other people's houses. Kind of blending them in with the decor.
Me: ...?
Mom: Just little things. Like refrigerator magnets.
Me: You bring magnets to people's houses and put them on their refrigerators?
Mom: Yeah.
Me: I have OCD. Don't do that to me. I'll either notice right away or it'll drive me insane.
Mom: I stuck one to Lucy's* fridge weeks ago and she still hasn't noticed. I might have to start doing it with bigger things.
Me: Wait, hang on. You actually bring stuff from your house to other people's houses and just leave it there without them knowing?
Mom: Yes. And then I take something!

* Names have been changed to protect the victims. If you're a friend of my mom's and you're thinking Lucy might be you, you're probably right. Check your fridge. And maybe your valuables, although I'm like 98% sure she was kidding about that last bit.