LOS ANGELES, Oct 29 — Madonna just cranked up things to an unbelievable level during her Rebel Heart tour at The Forum in Los Angeles recently.

Fans really got more than they bargained for when the singer welcomed Katy Perry on stage last night with Madge spanking Perry’s butt, and calling her a “bad girl”.

“She’s a bad, bad girl. I won’t hurt you,” Madonna said before jokingly kicking Perry’s butt with her heel.

With Perry leaning over, Madonna backed into her as dancers looked on. Then the pals strutted to the beat of a fitting song, Madonna’s “Unapologetic Bitch”.

It did look rather awkward when Madge started humping Perry while she continued shaking her bum, but this is a Madonna concert we’re talking about here, so obviously the crowd completely approved of all things bizarre!

Perry later wrote on Twitter: “Well, that was unrehearsed but ILY @madonna my QUEEN.”

Well, that was unrehearsed but 💅🏼 ILY @madonna my 👑QUEEN👑 #Repost @bahjournalist

A video posted by KATY PERRY (@katyperry) on

#KatyPerry が登場👑👑👑 #Madonna#RebelHeartTour

A video posted by rayrayka (@rayrayka) on

これかわいいね👩👧 #Madonna#KatyPerry#RebelHeartTour

A video posted by rayrayka (@rayrayka) on