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!
by G.B. October 20, 2005
Get the schwackmug. by tyler VONhill December 2, 2004
Get the schwackmug. by LingoGoddess June 26, 2017
Get the schwackmug. by DONTSCHWACKME3001 October 23, 2009
Get the schwackmug. by joey the gent June 19, 2011
Get the schwackmug. 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!!!"
"Dude, whatever!! You know you go home and schwack it like 6 times a day! I seen you!!!"
by Marcos August 29, 2004
Get the schwackmug. by Jabber September 28, 2003
Get the schwackmug.