A combination of the words scab and booger. They are the scab-like boogers you get in your nose, you have to kinda scrape them off and generally hurts, and sometimes they bleed a little tiny bit.
The tiny, shuffling, barely off the ground steps old people use to maintain balance and minimize effort when they walk. Also used by women in long, narrow, tight skirts or dresses without a kick pleat or leg slit in them.