A term used to describe a person who remains logged into online games with no intention to play; this typically raises expectations from friends to go participate in quests and such, only to end in disappointment.
1.) I invited John to play a match of League of Legends with me, but he explained that he was busy doing something else. It took him ten minutes to respond, and in those ten minutes, I could've already gotten into a match. Bloody killtease.
2.) I logged onto World of Warcraft hoping to quest with some of my guild members, but it turns out they were all AFK while doing participating in karaoke on ventrlo.