Quotes / Saying Sound Effects Out Loud

Inigo: Sigh.
Owain: Okay, just stop. You're not even sighing. You're just saying the word "sigh."

Willow: Buffy, I want you to know that I'm really sorry for letting you down. You know, here before with the magic going all Arrrrgh! and me going all Eeeeee! and everything getting all Rrrrrr!

Linkara! He is a man! PUNCH! Wears a purdy hat!
Atop the Fourth Wall theme song.

The dog hadn't barked. It had said "woof."

Krillin: [firing energy blasts] Pachu! Pachu! Pachu!
Trunks: ...Are you... making laser noises?
Krillin: All the time in my head. Why, is that weird?
[beat]
Trunks: [starts firing energy blasts] Pew-pew! Pew-pew!

Bob Barker: The bad news is that the beeper. You know when the wheel spins, It goes BEEP! BEEP! BEEP! BEEP! BEEP!? Well, It's broken. While that is getting repaired, Can you beep for the wheel? Let's try it one time.
[Audience beeps]
Bob Barker: That's pretty good.

Tommy Thunder: Knock knock! I have to say that because you don't have a door.
[A bit later]
Sonic: Slam. I have to say that because I don't actually have a door.
Sonic Boom, "Tommy Thunder, Method Actor"

BOOM!
Hellboy every time he punches something

Fang: When the heavens, the earth, and the people cry out for a hero, Fang the Mighty Hero of Adventure will answer the call! Fwoooooosh!
Zenke: You're a lively little bastard, hero. Tell me, what's the deal with that 'fwoosh' sound you made?
Fang: Isn't it obvious? That's the sound of the wind!
Della: (Zenke's fairy) Oh, you were just making sound effects. How stupid.
http://tvtropes.org/pmwiki/pmwiki.php/Quotes/SayingSoundEffectsOutloud