The Marriage of Figaro/Funny

• The Count's reaction when the Paper Thin Disguises come off: "Oh God, now I'm confused."
• Figaro, when told he is to marry Marcellina

Figaro: You can't do it without my parents' consent!
The Count: Who and where are your parents, hmm?
Figaro: Give me ten years, and I'm sure I can find them!

• If done correctly, the moment when the Count tries to pull his 'wife' out of her hiding place and first produces the rest of the cast who weren't on stage at the time.
• The Countess's attempts to convince the Count not to worry about Cherubino's being in her dressing room, which actually make things worse.