Earlier quoted context omitted.
They weren't trespassing, they were invited! Aside: why do Americans always talk about trespassing as something that is done to the trespasser? Isn't trespassing the act itself? If I plant myself in your livingroom uninvited, then surely I am trespassing . Why do so many people instead say that I "get trespassed"?
Because it's a common phrase? Same as "get carded"? English is flexible; almost any combination of words can start to have meaning.
I know it's a common phrase (albeit sa uniquely american one? Never heard this from e.g. Brits). I'm asking how it came to be that way when it seemingly makes no sense.
> Same as "get carded"?
No, because "being carded" (if I understand correctly) is something that does in fact happen to you. In trespassing, you are the one doing the trespassing (to something/someone else). That's why I find it so weird that Americans turn the subject into object in the sentence.
> English is flexible; almost any combination of words can start to have meaning
Sure. But taking a perfectly fine sentence and turning the subject into an object (when the physical reality is unchanged) seems strange, and warrants curiosity.