1. The space between the start of your butt crack to the butthole.
2. Opposite the gooch; the butt crack's gooch
Man, I itched my sloop and it stank real bad.
fart posture; any position in which farting becomes easier and more enjoyable or satisfactory.
My brother practices fosture by spreading his butt cheeks and farting into the air. The positions of fosture are endless.