What does Calf - cutter mean?

Calf - cutter meaning in Urban Dictionary

an mma submitting performed from one half shield. developed by making space room between both you and your opponent. move under their armpit and sit up, so now he should-be behind you on all fours (but nonetheless in two guard). cross your calf into the straight back of your opponents leg and grab their toes and pull back. The bigger you grab on his foot, the more it hurts