Addition to the 'squirrel grip' - which is inserting your thumb in a woman's vagina, and your index finger in her anus (other way around if she is in 'doggy' position)

The hole punch is when you squirrel grip a lady so intensely, a new hole is created between the anus and vagina. Therefore, every-time this woman shits in the future, she shits out her anus AND vagina.

V. To punch somebody in the rectum.
N. The action of punching somebody in the rectum.