"beat it with a stick" is an odd phrase indie-neo people use underground in hidden, dark corners to describe everything.
It can be used in many different scenarios, such as:
-In the worst situations, like if you're stuck deep in a dungeon. Of course, you go up to the guard and beat him with a stick.
-In happy situations, like if you're at a birthday party. Obviously, you're going to be beating the pinata with a stick.
-Or, of course, during "alone time". Beat it with a stick, baby.