brown winker
Location from which poop emerges.
He was bent over, giving them an eyeful of his brown winker.
Brown Eyed Winker
The act of spreading your cheeks and pinching your asshole while mooning someone. If done correctly, this looks like a winking brown eye to the observer.
Yeah, a regular mooning just wouldn't do it, so Tubey gave that bitch a brown eyed winker.