I believe it stands for Free/Libre Open Source Software. I think the idea is to explicitly indicate both free as in beer and free as in speech. However, to me it just sounds like throwing in a romance term for the sake of it. But maybe I’m just ill versed on the whole free/libre divide?
I’m the bottom, so is my wife. Only difference is she does it DURING the movie. It can be pretty annoying, hard to get used to.