Is this what my upstairs neighbors are doing all the time?

If someone is in your house and says the phrase “watch this,” it’s probably a good idea to get them to leave before they do anything stupid.

Left to our own devices, us dudes will engage in a lot of stupid behavior in order to impress, or even simply entertain, the other people around us. It’s both why we achieve some pretty cool things, and why we end up in the hospital so often.

This guy wanted to show his friends how well he could do a front flip — and ended up demonstrating how thin the glass on an aquarium can be.