teach one's grandmother to suck eggs

Другие идиомы:

• A for effort
• above average
• as easy as ABC
• back to basics
• below average
• bookworm
• brainstorm something
• call the roll
• cap and gown
• catch up to (someone or something)
• count noses
• cover a lot of ground
• cow college
• crack a book
• crank out a paper