A couple of young men in America prove that riding a motor vehicle is no guarantee of common sense.

In one video, filmed in Milwaukee on 8 September 2019, an attempted motorbike trick goes horribly wrong.

The rider of a motorbike goes over a ramp and flies into the air before falling off the bike, which carries on riding down the street. The rider seems to be ok though as he quickly gets up and chases after the bike, which then falls over.

In another clip, filmed on Saturday 20 April 2019 in Dayton, Ohio, another prankster rolls down the road on top of a car, along with a BBQ on the roof.

Police walking down the road seem less impressed, yelling at him to get down immediately, though it is not clear the car can stop quickly given the delicately balanced BBQ on the roof.

Sunday 8th September 2019 East Wisconsin Avenue, Milwaukee, Milwaukee County, United States
This motorcycle has gone horribly wrong. A man in Milwaukee, WI is about to do a trick on a motorcycle in some kind of event. He goes over a ramp and then falls over. Everyone I looking around and people go to help him. Let's hope he is ok!

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Filmed on Saturday 20th April 2019 South Main Street, Dayton, Montgomery County, United States
The police are certainly not happy with this guy. A man in the University of Dayton is on top of a car and he is grilling. The police are yelling at him to get down but I guess that isn't quite possible since the car has to go very slowly.