The prison guard position is greatly influenced by the popular jokes about being in prison. This a submissive role plays by the woman and the man as the prison guard.
The woman stands straight in front of her man, her back facing him. Her legs are widely spread with the same width as her hips. The man grabs her wrists and pulls them to her back, towards him, like he was going to put handcuffs on her. And then the man pushes her body downwards while holding her wrists. Then he thrusts into her hard.
This position is very erotic and sensual, especially to couples who love playing games during their sexual hours. It is ideal if the man and woman have the same height, but if one is shorter than the other, then the short partner can stand on a wedge or pillow, or anything that elevates the height.