The bits of shit that escape from an anus because the sphincter has become so distended - be it from anal sex or other activities - that it can no longer retain feces.
John gets fucked in the ass so much he leaves a trail of kibbles and bits wherever he goes
breakfast, lunch, dinner and/or a snack in general. Can include, but is not limited to, anything eaten while you have the munchies. In reference to the dog food Kibbles 'n Bits.
"I want some kibbles!"
"Mom, fix me kibbles!"
"KIBBLES!"