To refit; to repair, or make reparation for; hence, to repay orrequite. [Obs.]It shall be good that you redub that negligence. Wyatt.God shall give power to redub it with some like requital to theFrench. Grafton.
When you have taken a crap and shortly after you feel like you need to wipe again to make sure you got it all. This could be caused by a fart after the crap, or sweating close after the crap.
* These videos are coming directly from Youtube, they may or may not be most relevant to the word "Redub"