Cheesy smelling residue found at the top of the bum crack, just below the smalll of the back, when you have not washed it for around about a month or more.
Unwashed after a couple of weeks sweaty work - results in BumCheese.
my bum hole feels sore and crusty loads of bumcheese. I do hope you dont have aids now would you do one because i have to go and poo big time and i dont know you that well.