Just sat in the bath and realised that unless I am in the shower, I never wash my buttocks. I always always wash my bum crack
but not my actual buttocks. I wash once sometimes twice a day so generally not a mucky bugger but my poor neglected buttocks.
I am now convinced that if I give them a good scrub everyday my bum will surely rival a peach 
Am I alone in my weird random muckiness?