In that case I’m afraid I don’t know any solution, hopefully you’ll find something that fits your needs. If you needed to cast Youtube-videos and such, I would’ve shared my own bodged method that combines KDE Connect, MPV and a regex-enabled fork of “handlr”.
It’s a reference to an old reddit post. In the post, the OP explained they had a knife at their toilet for poop that got stuck, hence the poopknife. It was only later in life when they asked a friend for their “poop knife”, when they discovered that nobody else has a knife like that and how weird it is.