three bags full

(yes sir, no sir) three bags ˈfull (sir)

(old-fashioned, humorous) said when you agree to do something that somebody asks you but think that they are rather rude or unreasonable: Our new manager doesn’t want to hear our opinions, all he wants is, ‘Yes sir, no sir, three bags full sir.’This phrase is from the nursery rhyme, ‘Baa, baa, black sheep’.
See also: bag, full, three