Pink got a nice Christmas surprise while performing the last stop of her Funhouse tour in Hannover Germany last night—her hubby Carey Hart joined her onstage during “So What,” and even better, stripped down to his undies. Pink took a brief break from singing to smooch her fella, then straddle him on the bed. Video of the intimate moment in front of thousands after the jump.

The two rockin’ lovebirds took to their Twitters to remark on the shocking moment. Pink tweeted: “@hartluck surprised me on stage during so what+was naked in the pillow fight? I screamed, then fell over… I’ve never been so ‘got’ in my life! F*ckers!!!!” As for Hart, he posted: “Ok its all setting in now. I just got ripped down to my underwear on stage in front of 15k people! Ahhhh, it was worth the look on her face!”

Check out Pink’s shocked face yourself right here (and Carey down to his skivvies):

We’re glad these two crazy kids are back together after a brief break-up, although maybe they should save the kinky stuff for when an entire arena of people (and their cameras) are watching.