My Grandfather stole veggies from George Bernard Shaw's garden during WWII as a kid (he was hungry). He said the man knew the most colourful language he'd ever heard (that's saying something for a kid that grew up by the Isle of Dogs). I imagine rations wouldn't have replaced Shaw's stolen veggies.
The famous person didn't ride a bike, but I think it's a pretty good story. I can just imagine the writer in his 80's trying to chase down a 12 year old on his bike.