Use is it as a substitute for "screw it"
It has been suggested that the word's origin can be derived from the following mnemonic:
Second Semester Senior= SSS=S^3=S cubed=Scube.
The word is believed to have originated from monta vista\ high school in early January 2006 when seniors found themselves feeling malaise and apathy towards all their AP classes.
Frank: So did you study for the AP government test?
Sam: No, I'm gonna scube that.
Sam: Pelkey assigned three major projects due before the AP test?
Sam: That's smart. Anyway, Ima scube 'em.