Derived from the video game "Half Life 2" a "manhack" is a small flying drone armed with three sharp blades that would chase the main character, Gordon Freeman, around during the early levels of the game. This term has been adapted in recent years to describe any AI or remote controlled roto-craft such as helicopter or quadrocopter that is out of human control.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life