WATCH: Madonna Spanks Anderson Cooper on Stage

Madonna gleefully made CNN anchor Anderson Cooper her "bitch" during her performance last night at the Barclays Center in Brooklyn.

The moment is a new tradition for the queen of pop on her Rebel Heart Tour. Before performing her track "Unapologetic Bitch" each night, Madge pulls one member of the audience on stage to dance with her before giving the chosen "unapologetic bitch" a spanking as well as a banana.

Cooper was the recipient of the pop performer's "punishment" last night, commanding him to "bend over" and announcing he'd been "a bad boy" before spanking him on stage.

Following their collaboration, Madonna thanked Cooper on Instagram for being a good sport, saying, "Anderson thanks for being my Bitch tonight!!! Hope you enjoyed the Banana!!"

Watch Madonna playfully 'punish' Cooper in the video below.

I was front & center as the unbelievably adorable, unbelievably dorky @andersoncooper became tonight's #UnapologeticBitch for @Madonna's #BarclaysCenter #Brooklyn debut. And we're all the better for it. Watch him literally go #AC360. #RebelArt #RebelHeart #RebelHeartTour #Madonna #AndersonCooper #Banana

A video posted by Erik Schut (@eriktla) on Sep 19, 2015 at 10:48pm PDT