I'll eat my hat

I'll eat my hat.

Fig. I will be very surprised. (Used to express strong disbelief in something.) If Joe really joins the Army, I'll eat my hat. If this car gives you any trouble, I'll eat my hat.

See also: eat, hat

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I'll eat my hat  (old-fashioned)

if you say you will eat your hat if something happens or does not happen, you mean you will be very surprised if it happens or does not happen If we can't beat a second-rate team like Sheffield, I'll eat my hat.

See also: eat, hat