Instructions not really necessary...
10: type in a swear word
20: press enter
30: goto 10
The initial dictionary consists of several hundred swear words, slurs, vulgar insults and just plain wrongness. However, every time you type in a word it is added to the database and, if enough people suggest it, it'll become a valid swear word - I look forward to reading all the crazy crap you guys submit...I think =/
EDIT: Also, it should save and reload your progress, but this seems to be working everywhere but Newgrounds
EDIT 2: Unsurprisingly, 'Fuck' has the lead so far, followed closely by 'Shit'. Although kudos to whoever suggested "assramminghamsterfucker" - that truly is inspired.
EDIT 3: Well I've learnt a lot of new words from you people....You...Disturbin g people. I've very quickly put together a 'top 10 swears' list which you can view at the following link: http://www.zobbix.com/ble ep_stats.php
The top 10 are pretty bog standard, but I'll trawl through the database later for some of the more obscure ones.