eat humble pie

:  to take in through the mouth as food :  ingest, chew, and swallow in turn

:  to destroy, consume, or waste by or as if by eating

:  to bear the expense of :  take a loss on

:  something to eat :  food

:  not proud or haughty :  not arrogant or assertive

:  reflecting, expressing, or offered in a spirit of deference or submission

:  ranking low in a hierarchy or scale :  insignificant, unpretentious

:  to make (someone) humble (see ¹humble) in spirit or manner

:  to destroy the power, independence, or prestige of

:  magpie

:  a meat dish baked with biscuit or pastry crust — compare potpie

:  a dessert consisting of a filling (as of fruit or custard) in a pastry shell or topped with pastry or both

:  affair, business

: less common spelling ofpi