Get over yourself (informal) - something you say to tell someone to stop thinking that they are more important than other people
Ru: спустись на землю (когда кто-то слишком высокого мнения о себе)
Expulsion (from) /ɪk'spʌlʃ(ə)n/- forcing someone, or being forced, to leave a school, organization, or country
Ru: исключение, изгнание (из школы/организации, страны..)
Manga: Great Teacher Onizuka