The act of masturbating while your partner/future ex-girlfriend/boyfriend places their mouth at the base of your wang, causing your forceful masturbation to, at the same time pound her mouth with the top of your tightly wrapped fist.
Ken: "Dude, i think i just beat myself off and beat up my girlfriend at the same time while she was blowing me."
Reeyou: "That my friend is called a Mercy Stroke, you have Mercy Stroke immunity, don't worry"
*Ken and Reeyou hi-five while time stands still*
Reeyou: "That my friend is called a Mercy Stroke, you have Mercy Stroke immunity, don't worry"
*Ken and Reeyou hi-five while time stands still*
by 8butt April 30, 2014