That's exactly what happened at Madonna's Rebel Heart Tour on Thursday (September 10) in Montreal.
During her performance of 'Unapologetic Bitch', Madonna brought a male fan on stage to dance with her. But it wasn't until after the performance that the pop icon was left briefly speechless.
Madonna gave her fan a banana as a prize for joining her on stage, which he immediately shoved in his mouth. Madonna looked stunned while her back-up dancers laughed and the audience cheered.
'Well, I guess you know what to do with that banana,' she joked.