The shower one has after a night of heavy drinking (where you either did something really stupid or can't remember what you did). A redemption shower is the only way to cleanse you of the sins from the night before. After a redemption shower all is forgotten and you can start all over again.
Waking up with a hangover Ben realized he was naked and lying on his neighbor's front lawn. Quickly he ran home for a "redemption shower".
by BTC77 April 07, 2010