this is a person who use number 2 bathroom taking a shit and they don't take a bath and clean their ass good and go around smelling like shit all over the place and even in public restaurants and movie theaters making everyone smelling that. use those three shells if you can't use a shower damn. the stench they gives off is loud and sickening. it should be a crime.
shitty booty ass crease is when you take a shit and it gets stuck all up in yo ass crease while looking at the picture often referred to as "shitty ass".