Yeah, somehow there really do be people who haven’t seen bluey. Crazy. It’s 2025 people.

I believe it means “whiner”. As in one who whines and complains.

I don’t know where @CurlyWurlies4All@slrpnk.net hails, but I just know this because I am a dad, which means I watch Bluey, and sometimes the dad on Bluey will tell the kids to “quit whinging”.