biscuit fist

To put your hand in a fist and punch someone (or something) so hard it ends up looking like a biscuit

To punch something so hard that your hand feels like a biscuit afterwards

If she says one more thing about me, I'll biscuit fist her so hard.

I got mad once and biscuit fisted my wall.... there's a major hole in it now.

After I biscuit fisted John, his face was so messed up he had to go to the hospital.