It looks harmless at first. A normal trip to Walmart, a cart left behind, nothing out of place. But police across several areas have warned about a prank that turns an everyday moment into a real danger—especially for families, elderly shoppers, and people loading groceries alone.

The prank involves intentionally rolling unattended shopping carts toward moving vehicles or pedestrians in parking lots. In some cases, pranksters give the cart a hard push and film it as it slams into a car, hits a person’s legs, or forces drivers to brake suddenly. What’s meant to be a “joke” online can cause real injuries, vehicle damage, and near-accidents within seconds.

Law enforcement says the biggest risk is timing. Parking lots are already chaotic spaces with limited visibility, distracted drivers, and people walking between cars. A heavy metal cart rolling downhill can easily break bones, dent vehicles, or knock someone to the ground. Several incidents have reportedly involved close calls with children and older adults who had no time to react.

Police are also warning that this prank is not treated lightly. Depending on the outcome, those responsible could face charges ranging from vandalism to reckless endangerment or assault. Even if no one is hurt, property damage alone can lead to serious legal consequences. Filming it for social media does not protect anyone—it often makes prosecution easier.

Shoppers are being advised to stay alert, especially when loading groceries, and to report suspicious behavior immediately. Store employees are also being told to keep an eye on carts left in unusual places or groups of people lingering with phones out in parking areas.

What some people call a prank, police are calling a preventable hazard. A few seconds of “content” isn’t worth a lifetime injury, a lawsuit, or a criminal record. Staying aware is the best defense—because this is one trend no one wants to be part of.