learn (something) off pat(redirected from learn that off pat)
learn (something) off pat
To learn, master, or understand something perfectly, to the point of requiring little or no focus to do, recall, or accomplish it. I know it's a little tricky getting the hang of the machine, but keep at it, and you'll learn it off pat in no time. My sister is such a musical prodigy that she can learn a song off pat after listening to it only once or twice.