Comes from Halo 1. It is when you melee some one in the back of the head and kill them with one blow (schwack).
I was on Blood Gulch and came across a sniper he didn't know I was behind him so i gave him a schwack and took his sniper rifle then proceeded to go on a killing spree!
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that slut ali krammer made me touch her smelly cunt so i schwacked her.
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A large group; a shitload; a huge amount!
I just picked up a whole schwack of old coins at a yard sale today!
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combination of bitch-slap and smack
After I told my friend who I liked, she schwacked me in the face.
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The process of taking a typical tube sock and smacking jeff in the face as he sleeps
I schwacked jefff and his mom in the face last night before going to sleep!
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To masturbate or jack off or spank the monkey.
Guy #1- "I've never masturbated once in my life."
"Dude, whatever!! You know you go home and schwack it like 6 times a day! I seen you!!!"
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To hit someone in the nuts.
He pissed me off, so I schwacked him.
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