Someone gave Dave Navarro the hook ... in his back ... and it's on video ... and it's really gnarly.
The Jane's Addiction guitarist was at "Vampire Club Wednesdays" at Room 86 in Hollywood last week ... when he dangled himself from meat hooks ... literally pierced through his back ... and then swung wildly around the room.
Fun fact: The hook is supported by your skin, which stretches to accommodate the moves. The non-faint of heart have hooked themselves in the chest, the knees and the arms.
Try it once ... and you'll be hooked.