Kirk Hammett of Metallica was playing a show in Milan, Italy in the rain when he shifted his weight and slipped on his wet guitar pedal. Kirk posted the video below of his performance mishap with this comment. "Ummm- I slipped on my wet wah pedal. 💀 🌧 It rained so much I felt like I was playing guitar in the shower."
Kirk slipped and fell onto the stage but quickly jumped back up and continued to play like the pro he is.
Make sure to check out both camera angles.