The small, stubborn slivers of shit that come out of your ass after you're finished with a dump. Nothing comes out unless you strain every muscle in your ass for 20 minutes until you finally release the butt raisins.
Man, my asshole is empty, but those butt raisins really put a toll on me *huff* huff*
Fine clusters of excrement that have solidified on the ends of pubic hairs in the rectal region.
Also double as excellent munitions.
Andrè plucked a butt raisin from the crusty rim of his anus, flicking it nonchalantly at the other people on the bus.