ELI5: Explain Like I'm 5

Train surfing

Train surfing is when people climb on top of a moving train and ride it like a surfer would ride a wave. This is NOT safe and can be extremely dangerous.

Trains are BIG and FAST and you can easily fall off and hurt yourself or even worse. Plus, trains have a lot of electrical wires that you can accidentally touch and get seriously hurt.

It's also illegal and you can get in trouble with the police if you're caught. It's important to always follow the rules and stay safe when traveling.