Chuckin’ can also refer to some of the things
people do when high on meth. These can be demonstrated by an obsession to take things apart, such as DVD players or cars. It can be cleaning the bathroom and then deciding to rip out all the tile and quit the project halfway through. It can be excessive
masturbation, jaw clenching, or teeth
grinding. One common characteristic of tweaking is the impulse to start a project and then not finish it.