MUG STH
Meaning of MUG STH in English
up mug sth up | ˌmug ˈup on sth
( BrE , informal ) to learn sth, especially in a short time for a particular purpose, for example an exam
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005