As an American who writes fic for a British t.v. show, I try to be cognizant of the differences between our shared language, so I appreciate Community's attempt at translating the Queen's English to American English.

American English -- > English English
6:30 P.M. -- > Gravedigger's biscuits
Fanny -- > Vagina
Everything -- > Vagina
Pizza -- > Italian fanny

I hope you found this guide as useful as I did.