I've only done the "call of shame" once so far. I was riding gravel down a hill one evening, racing to get back home before dark. I hit some large flat rock in the middle of the road, too late to swerve or miss it, and I heard the hiss from the front tire and knew I was going flat. Had it not been getting dark I'd have just thrown a new tube in, but I didn't want to ride unfamiliar gravel in the dark with a not-very-bright headlight. So I called my wife who came out and picked me up. I ended up having not one but two sets of pinch flats in my tube. Nowadays, though, I have better headlights so should it happen again I'll just fix it on the side of the road, though I still don't ride much gravel in the dark.