Hillbilly Circumcision
When a hillbilly boy/man is getting a blow job from his sister/cousin you kick her in the jaw taking of foreskin and some of the penis, it all depends how deep his penis is down her through.
I heard Jill's boyfriend walked in on Jack and Jill when they were having sex. He he kicked Jill in the jaw and gave Jack a hillbilly circumcision.
Hillbilly circumcision
When one puts their uncircumcised penis unerect into an empty beer can's drinking port, gets erect, twists and pulls.
Man, I heard heard (random hick name) did a hillbilly circumcision with (different random hick name).