Short name for concussion jumping, or, using concussion grenades to perform trickjumps in the half-life mod, Team Fortress Classic. Started out with easy crap such as concmap_r, and now there are maps that are so fucking huge, you would go insane trying them.
"Who's up for some concing on concmap_cze_r?"
by Sam August 06, 2004
by Sam May 21, 2004
by Sam January 24, 2003
by Sam July 27, 2003
by Sam April 23, 2005
by sam July 02, 2004
the act of snorting a line of crystal meth through the nose by heating up the end of a glass pipe and then opening your mouth to release white smoke
dayum! them hotrails FUCK ME UP!
by sam February 12, 2004