What better way to let somebody know you’re unhappy with them than filling their car with cement? In this viral marketing prank from Kazan, workers from a cement company agree to do exactly that. They reverse a cement lorry to the side window of the car and fill it about two thirds up the way up. It is unclear whether the owner of the car was in on the prank but what is certain is that the car is officially ruined. Credit: YouTube/Юрий Куликов.