The phenomenon of a turd floating back into a toilet bowl after flushing.
Glancing at the bowl, I saw the turd floated back after appearing to flush -- a case of deja doo-doo.
The phenomenon of seeing excrement float back into the toilet bowl after flushing.
I glanced at the bowl, only to see that the turd had floated back into the bowl -- a case of deja doo-doo.