Fast Leaver = Fleever. Those in IRC chat sessions who announce they are leaving and don't give enough time for others to say goodbye. Rule of thumb it to count at least 10 seconds before leaving, or you will be a fleever.
22:02 <Tom> Bye all!
22:02 <User Tom Exited the Channel>
22:02 <Frans> Bye Tom!
22:02 <Frans> Fleever!!!!!
22:03 <John> Yep, that wasn't a ten-count!!!
22:02 <User Tom Exited the Channel>
22:02 <Frans> Bye Tom!
22:02 <Frans> Fleever!!!!!
22:03 <John> Yep, that wasn't a ten-count!!!
by Frans Keylard May 16, 2006
by danceroftheparty October 7, 2005