Small remnants of food found at the bottom of their own bags that aren't big enough to constitute as the original food but too big to qualify as mere crumbs.
(When finishing a bag of chips) "Do you want these screebles before I pour them directly to my mouth?"
by CeceKay January 06, 2017
The area where your dick meets your ball sack. Illinois State University is known for their crazy and hairy screebles.
by Michael John Peter January 30, 2009