Level 1- She uses vice like kung-fu grip grabbing the penis and mashes her hand wildly and uncontrollable up and down.
Level 2- Using spit the girl adds lubrication to the shaft of the penis which allows for much greater pleasure while reducing friction.
Level 3- A girl constantly pulls spit from the back of her throat maintaining a slick working surface while she jerks off her man/ men, using both hands in concert.
*The level 3 Hand-Jibberis the closest thing to a real vagina mankind has come.
Friend- "Good ole rub and tug huh?"
Me- "Shes a giver bro, I think it's love"