The action of stabbing someone with a knife, then repeatedly penetrating the open wound with one's penis. Usually resulting in ejaculation by only one of the parties involved.

The ultimate insult in a knife fight!
I sliced his stomach, and I finished by mackin' the slit. He's never been quite the same...
by mrs.rayray September 22, 2010
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sexy violinist from yellowcard.

he does backflips onstage, and tho yc has pretty much sold out...i'd still penetrate every bit of sean and bathe in his manjuice anyday.
sean mackin is SEXAY!!!!
by celebrity skin January 2, 2005
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Famous singer / rapper / dancer from the UK
Any one know that rappers name ?

That's heavy mackin' bredda he fast like sonic g
by Portmorebredda February 2, 2020
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The act of flirting with persons whose parking meter is set to expire, by use of change they may lack.
Joe took a handful of quarters and went meter-mackin.
by 655, The Wise June 21, 2013
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Taking part in the locking of lips. Commonly known as smooching, snogging, sucking face, etc. Derived from the more well known, and certainly less interesting, "making out."
"Hey Vanessa, I like you. Wanna go mack out in the woods?"

"Did you see those two mackin' out in the hall yesterday? I thought I was going to projectile vomit it was so repulsive!"
by NotAPaperGirl October 24, 2008
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Verb: To mack, or hit on, numerous women at the same time.
Guy One: Dang brah, you're getting all the ladies!
Guy Two: I know!
Guy One: How do you do it so well!?
Guy Two: I've been mackin' the babes since '95 bro.
by Sir-Macks-A-Lot November 20, 2009
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