He's that guy you see in every team fortress 2 comment 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.
HOLY SHIT STICKMASTER500 YOU'RE LITERALLY IN EVERY COMMENT SECTION ON YOUTUBE
To engage in an intenseexercise 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."