You take your index finger and place it on the northern region of your anus. Then you take your thumb and place it on the southern region of your anus. Once they are placed, you slightly push in and squeeze your index finger and thumb together, giving your anus a winking effect.
So this guy passed out at a party and when they woke him up, he opened his eyes and there was this other guy standing over him showing him a "Crunched Colon."
The guy who was asleep was highly upset and tried to punch the guy doing the "Crunched Colon." The guy doing the "Crunched Colon" retaliated and shit while he was squinting his anus! It was a mess!!!