have something off pat

have (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 have it off pat in no time. My sister is such a musical prodigy that she can have a song off pat after listening to it only once or twice.
See also: have, off, pat
Farlex Dictionary of Idioms.

have something off (or down) pat

have something memorized perfectly.
See also: have, off, pat, something
Farlex Partner Idioms Dictionary

have/know/get something off ˈpat

(British English) (American English have/know something down ˈpat) know or have learned something so well that you can repeat it at any time: I’m afraid I haven’t got the answer off pat. She has all our names and cellphone numbers down pat.
See also: get, have, know, off, pat, something
Farlex Partner Idioms Dictionary
See also:
  • get (something) off pat
  • have (something) off pat
  • have/know/get something off pat
  • know (something) off pat
  • learn (something) off pat
  • could (do something) with (one's) eyes shut
  • do (something) standing on (one's) head
  • do something standing on your head
  • think little of
  • think little of (someone or something)