Greece in the dub of season 3, when Japan pretends to pull his thumb off.
Romano shows off his manly screech in the dub, when both he and his brother are caught by England. Actually, he does this a lot.
Finland in the dub of season three too, from the "Running Away with Mr Sweden" episode.
Zoisite does this when he discovers that he is surrounded by rats in the original Japanese version of Sailor Moon. Aside from his relationship with Kunzite, this was one of the main reasons he was turned into a girl for the DiC version.
Early in Azumanga Daioh, a war against a cockroach begins after a very high-pitched scream erupts from one of the students. Afterward, it's revealed the source of that scream was Sakaki who, while being an actual girl, is also an Aloof Dark-Haired Girl and normally has a deep voice.
Jaden:(Crowler screams offscreen) Someone's in trouble! Bastion: Let's go help her!
In any Ecchi anime, whenever the guy walks in on a girl taking a bath, you'd expect the girl screaming at the guy. This is not the case in High School DXD when Issei walks in on the bathroom while Asia was still inside. He's the one screaming and trying to cover himself instead of the other way around.