Boothill's face is the only non mechanical part of his body, therefore the only place he can feel any sensations. This has caused him to develop a habit of rubbing his face along things he wants to feel, almost like a cat.

oh, how he craves to feel touch.

the cyborg is currently slowly moving his face along the expanse of your bare body beneath him. His lips briefly pause in various spots to leave a small mark on your skin.

"..Darlin' you have no idea the way you drive me up the wall."