Doom Easter Egg - Sucky Time

There are two methodes on doing this: the first is easier but takes a long time.To do this, start a level and dont exit till around after an hour playing.When you end the level your par time will go up and keep going up until it gets to "sucks". The second methode requires a level editor so you can somehow add a level beyond ordinary boundaries(for example,add a level 34 to doom 2).