Supergirl, Wonder Woman and Lois Lane walk into a bar ….

That’s the premise for this great, loopy one-of-a-kind promo CW cooked up for the new “Wonder Woman” film.

It was a surprise when it aired during the “Supergirl” season finale earlier this week. Supergirl (Melissa Benoist) has been fighting her arch-enemy Rhea (Teri Hatcher) while the president (Lynda Carter) works to repel the Daxamite invasion.

But clearly somebody at CW saw an epic chance to bring together Supergirl, the original Wonder Woman (Carter) and Lois Lane (Hatcher) for this trippy salute to DC’s first stand-alone female super-hero film. I love it.

And the early word on “Wonder Woman” is good, too. Maybe the Amazon can shatter that box office glass ceiling.