The madlad Thanos DESTROYS Darkseid by his way of beatboxing called "scratch it"

taking something said back, changing one's mind.

forget that

cash money!!

Tattoos, especially old school prison tats.

In track, when a runner withdraws from a race before it begins. The term originated from the days when heat sheets were written on paper, and a runner's name would litterally be scratched off in pencil when he/she decided not to race.

Creating music by means of manually moving a record under a stylus. Typically seen in the musical genres of "House" and "Rap". See my Audio example.