The region between the balls and the arse-hole; can be an erogenous zone for some.
Girl: 'I was
fingering that part between his balls and his arse and there was shit there.'
Everyone listening remained silent but later laughed among themselves:
'Eww! He had a shitty chad.'
When you measure your dick,
don't start at the arse-hole and include the chad; you risk getting shit on your measuring tape.