Any Animes/Mangas with Practical Jokes?

[lifefits]

Do you guys know of any animes or mangas with naughty pranks or practical jokes in them?

In K-On, Ritsu plays several pranks on her best friend, Mio.
In Miss Machiko, a teacher plays jokes on her students.
In Godannar, they tease Shizuru about having a big butt.
In an epsiode of Kannagi, the girls tease the main character about his "manhood".
In Majokko Megu-Chan, a few pranks are played.
In Naruto, a few practical jokes are pulled.

Does anyone know of anymore scenes in animes or mangas, that involed a practical joke, or a character getting teased?
Thank you.

[TheSplundPopper]

Lucky Star: Konata plays pranks on her friends.
Paniponi Dash: most episode have characters(especially Rei) wearing hnd stickers of eyes and scaring their teacher. Episode 4 had a character teasing a weight concious girl by stepping on the scales behind her to make it read the weight of both of them.

[Datenshi]

Higurashi No Naku Koro Ni

Satoko is a prankster and a genious at settings traps. Also, there's a school club in the anime where most of the characters have to do embarassing things as a penalty when they lose a game.