when you are enjoying hardcore sex, you open the girls vaginal area then scream in it, and you draw back your fist then simpley toss it into the girls vagina. Formaly knowned as getting fisted.
open, scream like a wildabeast, then PUNCH IT. This might hurt, but if you're a whore that is used to having spaceous things in you it will be like another day at the beach. cha bra, cave beasting is great