The lesson to be learned here is: Don't show off with a supercar if you're not sure how to handle it. One valet at the Hotel de Paris in Monaco will be paying the price after he crashed a Lamborghini Aventador.

After completing the parking job, he wanted to rev the engine to show off, says Niki Motorsport. But the foolish valet had the $800,000 supercar in gear causing it to lurch forward and softly crash into an SUV.