Philosophy shower
When one spends an abnormally long time in the shower because they are putting thought into some of the deeper issues in their life.
Friend: Dude you were in the shower for 45 minutes! What the hell were you doing, jacking off?
Guy: Nah dude I was taking a philosophy shower.
Friend: Oh ok that's excused then.
Guy: Nah dude I was taking a philosophy shower.
Friend: Oh ok that's excused then.