Ways not to lock your bike

Last week in Oxford I saw a bike lying in the road, attached to the lamp-post by only the rear rim, front wheel had evidently been run over.

Mind you, I'm never surprised at what I see Oxford cyclists do. Undertake a lorry, you say...
I have to deal with it every day, there are a lot of tools on wheels here, le sigh.

equall amounts of non tools.

saves face