Small pieces of a bowel movement that stubbornly refuse to vanish down the drain on the first flush of a toilet. Not to be confused with a floater or a sticktite. Blogies need not float, and they never stick to the side of the toilet. Victims of the initial backwash, blogies simply need a clear and unencumbered path to the drain, which is almost invariably effected with a second flush.
I had to keep my mother-in-law waiting in the hall while I attended to some unexpected blogies.