And this time, she's pissed at officials in Costa Rica.
Turns out the aging, funny lady was in Costa Rica yesterday and scheduled to take a flight back to Newark. However, she claims she was "held hostage" after airport officials wouldn't let her board her flight!
According to reports, an airport official became suspicious when he noticed her passport read "Joan Rosenberg AKA Joan Rivers."
And although she tried explaining that her last name came from her late husband, Ed Rosenberg, the official remained suspicious and gave away her seat.
Police were eventually called to the scene, but it was too late as Rivers missed her flight.
She then had to grab a hotel for another night before finally catching a flight back to Newark this morning.
Funny how the name on her passport wasn't an issue when she entered the country, just when she left.
We have a feeling someone's not gonna be visiting Costa Rica again anytime soon.
[Image via WENN.]