Whats the best way to mess with another person's itouch?

[Brandon]

My friend gave me his Itouch 4g to jailbrake it but it was to far in ios so i'm in the process of downgrading and its gonna take a while... so ya im bored and wanna mess with him
he also doesnt have any social networks (instagram, facebook, twitter ect.) on his ipod

 

[RandomGuy1]

General - Keyboard - Add new shortcut.

 

[Kloey]

change his password and the language