Turning into a maniac and the act of heading and or planning to destroy something near you. Losing ones mind and planning on destruction of a TV, car, House, or other tangible property.
There is a story of a Killdozer that took out a Colorado town. The owner of the armored bulldozer for two years secretly planned out a manilating of the surrounding town and businesses. So the man manilated the destruction of the town and then carried it out. Another example: At 4:30 AM I jumped the fence to the neighbors yard where the white kids were blasting Gangster rap, I was in a frenzied manilation moment and then the stereo was picked up and thrown into the pool, thereby manilating it completely.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.