The first time I saw that was as a teenager. Was totally unprepared for the window scene... ?

Enjoy yourself.

(Typed in a British accent) 'You're drunk! That's disgusting!'

Centurion: What's this thing? "ROMANES EUNT DOMUS"? "People called Romanes they go the house?"
Brian: It... it says "Romans go home".
Centurion: No it doesn't. What's Latin for "Roman"?
Brian: "ROMANUS".
Centurion: Goes like?
Brian: "-ANUS".
Centurion: Vocative plural of "-ANUS" is?
Brian: "-ANI".
Centurion: "RO-MA-NI". "EUNT"? What is "EUNT" Conjugate the verb "to go"!
Brian: "IRE"; "EO", "IS", "IT", "IMUS", "ITIS", "EUNT".
Centurion: But "Romans, go home!" is an order, so you must use the ...?
Brian: The ... imperative.
Centurion: Which is?
Brian: Um, oh, oh, "I", "I"!
Centurion: How many Romans?
Brian: Plural, plural! "ITE".
Centurion: "I-TE". "DOMUS"? Nominative? "Go home", this is motion towards, isn't it, boy?
Brian: Dative? Ahh! No, ablative, ablative, sir. No, the, accusative, accusative, ah, the locative, sir! "DOMUM!"
Centurion: Now write it down a hundred times. Hail Caesar. If it's not done by sunrise, I'll cut your balls off.
Brian: Oh thank you sir, thank you sir, hail Caesar and everything, sir!

love the life of brian!