Especially during fights,
When I am watching anime, I can imagine someone listening from the other room thinking its some kind of a porno. Just watch sailor moon..
When they feel any sort of emotion, or are surprised or scared, they make all kind of "oooohhh" "ah!" "Oh!!!" Noises.
Or when they try to do anything, like push or lift something heavy, or slam down a fist. Its like "aahnnhhh!"
I love anime..so don't take this as insulting..
but I seriously must know