That's a pretty famous clip -- it's from The Last Waltz, if I'm not mistaken -- but I first heard it on Clapton's 1988 career-retrospective box set Crossroads.

That's a pretty famous clip -- it's from The Last Waltz, if I'm not mistaken -- but I first heard it on Clapton's 1988 career-retrospective box set Crossroads. Back then, the video was harder to come by, so my fellow guitar-nerds and I didn't actually realize the hows or whys of the handoff until years later. You can actually SEE that the strap was in a precarious position in the clip (it's clear at like 45s). Straps in that era didn't have strap locks. It'd just be a chunky post in the guitar, and a leather tab at the end of your strap you'd force over it. In a normal orientation, it'd be secure ENOUGH, but as shown it's been flipped over, which means the weight of the guitar itself is pushing on it in a way that will absolutely cause the guitar to slip out of it.