In the Rock Lee spin-off series (spin offs are not made or approved by Kishimoto, his coworkers/editors make them), there was an episode of Jiraiya, Naruto, and Konohamaru going to the hot springs to peek on girls. Jiraiya gave a lesson on the different types of perverts that exist before they went inside.
You must be registered for see images
Apparently...
Open Perverts= Jiraiya, Lee, Konohamaru, and Naruto
Closet Perverts= Neji, Kakashi, Iruka, and Ebisu
Casual Perverts= Yamato, Itachi, and Sasuke
Undefined= Choji, Sai, Gai, and
Orochimaru
Not even the animators know which way Orochimaru swings. Lol