A question of balance

Back in the day before i passed my driving test i used to get to work on those peasant carriers, one day we got of the bus in Birmingham city centre and we had to walk thru the market area (for those who know, get off at the Cabin pub and walk thru to where Adams is).
Anyway they had just repaved the market area and used the wrong paves (slippery when wet, but they didn't know yet), in front of me was this huge black geezer, i mean enormous, it had been raining and he slipped on the paves, went about 10 feet into the air and landed with a sickening thump, briefcase split open, papers all over the place.
Needless to say i nearly p***ed myself with laughter because it was a real comedy moment only for him to turn and stare straight at me, i absolutely s**t myself and was a bout to turn and run when he just smiled sheepishly, grabbed his stuff and hurried off.
I think that was my most embarrassing moment, i felt really bad afterwards.