This kid assumed his Airsoft gun's battery was dead, and his stuff paid the price.

This kid may look like a rosy-cheeked cherubic angel, but don't let that fool you. He's pure danger. He's heavily armed, and he can hit a target as small as a monitor from two yards away. Move over, American Sniper.

Honestly, this video is a pretty perfect example of everything you can do wrong with a weapon. Using it without supervision… in an enclosed space… pointed in a random direction… without checking to see if it's loaded. The kid explains in the video's description that he was filming himself to add special effects later, and he assumed the gun's battery was dead because it hadn't fired in months. But you know what happens when you assume, right? You have to buy a new monitor. And then your mom drops the F-bomb.

Sources: Super Nova