Faulk - I am bankrupt in gratitude (I think he's bankrupt in sense as well :-D

Lydia - (expressing her disappointment)
..had I projected one of the most sentimental elopements!—so becoming a disguise!—so amiable a ladder of ropes!—Conscious moon—four horses—Scotch parson (LOL!!)—with such surprise to Mrs. Malaprop—and such paragraphs in the newspapers!—Oh, I shall die with disappointment!

I found David the funniest in ActV
Gosh!! Is he nervous!! and at is blabbering best :-D

Dav - Oons! he's out of sight! and I'm out of breath for my part!

Dav. —there’s murder and slaughter—

Dav. Ay, please you, Sir Anthony, there’s all kinds of murder, all sorts of slaughter to be seen in the fields: there’s fighting going on, sir—bloody sword-and-gun fighting!

Dav. (quoted by Cheryl)Everybody that I know of, Sir Anthony:—everybody is going to fight, my poor master, Sir Lucius O’Trigger, your son, the captain—

Dav. ... I’ll call the mayor—aldermen— constables—churchwardens—and beadles—we can’t be too many to part them.

And of course Acres swearing and his lost valour;
Acres-the farther he's off the cooler I shall take my aim.
Sir Luc. -Faith! then I suppose you would aim at him best of all if he was out of sight! LOL!!!

-I'll stand edgeways. (I find the sound of it very funny, I don't know if it is a duelling word ;-)

-Odds levels and aims
-Odds tremors!
-Odds backs and abettors!
-odds daggers and balls!!