He's that guy you see in every team fortress 2comment section as one of the top comments in the comment sections of youtube, he also may appear in comment sections you would never expect him to be either.
A period of time during a school year when academic responsibilities are pushed aside in favor of non-academic pursuits. In slacker terms, an entire semester of going to the bar every night instead of studying. See also, alcoholism.
While it may happen at any point in a college, graduate, or high school career, typically a slackmester occurs in the last semester of a given school period, when students suddenly realize how pointless hard work really is.
Dave: "Tacos and then the bar later tonight?"
Adam: "Hmmmm Tuesday night, two papers due tomorrow at 8 AM, and I haven't slept since Sunday... count me in. I'm obligated as part of my slackmester.
To engage in an intense exercise or fitness regime which causes one to ignore relationships and responsibilities; usually a short-lived affair seen at the beginning of the year and immediately prior to bikini season.
Jessica: "Sorry I didn't call you back. I was on the treadmill. I love the way I feel now that I'm losing weight!"
Martin: "Well, I swear to God, if you don't answer the phone again because you're stairmasterbating I'm going to come over and poke Rocky Road down your throat."