Have a trick up your sleeve Idioms by The Free Dictionary Roll Up Your Sleeves: What Does It Mean? The phrase roll up your sleeves is an idiom that means to prepare yourself to get to workespecially for something challenging, demanding, Idiom "Ace up your sleeve" Meaning and Sentences Idiom of the Day: Roll up your sleeves Meaning Get ready to work hard or face a challenge. Example: The exams are near, it's time to roll up your