The final stages of Cactus Canyon and Banana Bay involve pushing the bomb into the path of a full-sized train and waiting for it to run the bomb over.
As of October 17, 2012, repeatedly quitting from official servers under certain circumstances Which are: Leaving an official Mann Up server, leaving without completing or losing a single wave, and if the server is full when the player leaves.Quitting during humiliation or after becoming dominated is announced by some servers as "RAGE QUIT!".The Pyro has the "BarbeQueQ" achievement for making someone ragequit.Scout: Yeah I dare ya, ragequit! C'mon, make us both happy!