I'm confused a bit. I always thought that the "walk of shame" had something to do with a mechanical for which a reasonable rider would have been prepared but I was not. Something like having to walk the bike because of a flat tire.

About getting off and walking up a climb... Mountain biking aside, because there are many loose, steep, unwieldy climbs in mountain bike riding, there is only one road where I have to dismount and walk the bike. I've attempted it three times and have not been able to scale it.

It's Monument Road in Middletown, MD, leading up to Washington Monument State Park. Granted, at this point, I've ridden ~60 miles from home or so, but the pitch has to be in the high teens. The road is relentlessly climbing and when it pitches upward, it just sucks the life from your legs. Unable to turn the lowest gear any more ...

But, that's the only one that I can recall. Maybe I don't get around enough.