What a stupid stunt.
I can't believe you're all discussing the ins and outs of what is and what isn't an idiot.
I for one was a bit shocked of his stupidity, and also amazed by his luck. Typical reaction though of the public* stunned and just standing there gawping whilst one did just walk off, but saying that no one really knows what they'd do in that kind of situation till it happens I suppose.
The poor bus driver is who I feel for.
*Admittedly they were mostly kids.