The act of slarving a dode to the point in which one is only able to utter "glack" through the tiny air crevasse between their lips and the glack-causing instigator's genatalia.
In the game fifa world cup your on a clear breakaway, but you instead pass it back to the next guy running down the field to strike the ball in the goal. Such as a one timer in hockey. It takes away from the legitmacy of the goal.
"Dude you dick you just pulled a glackin you could have just scored with the firstguy. Dick."
The action of having men nut in a jar and then insert it into another person's asshole. The person who nuts in the jar, the Glacker, will be the one who uses a hammer to smash the jar of nut that is inside the person, the Glackee.
Yo bro, I saw Gavin, Nick, and Zoe glacking in the dorm last night! Zoe was the Glackee!!!!
The action of having men ejaculate in a jar and then insert it into another person's asshole. The person who ejaculates in the jar, the Glacker, will be the one who uses a hammer to smash the jar of jizz that is inside the person, the Glackee.
Yo bro, I saw Gavin, Nick, and Zoe glacking in the dorm last night! Zoe was the Glackee!!!!