I'll eat my hat

I'll eat my hat

An expression describing the hypothetical act of penance that one promises to take if they are wrong about something. I'll eat my hat if the repairs end up costing less than $1,000. If you can prove me wrong, I'll eat my hat.
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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

eat one's hat

Declare one's certainty that something will not happen or is untrue. This hyperbolic expression almost always follows an if-clause, as in If he's on time, I'll eat my hat, that is, "I'll consume my headgear if I'm wrong." Charles Dickens used it in Pickwick Papers (1837): "If I knew as little of life as that, I'd eat my hat and swallow the buckle whole." [First half of 1800s]
See also: eat, hat

I'll eat my hat

used to indicate that you think a particular thing is extremely unlikely to happen.
See also: eat, hat
References in periodicals archive ?
The tournament truly sparked to life in the heavyweight clash between Spain and Portugal, and if there's a finer game in this tournament I'll eat my hat! Cristiano Ronaldo once again proved himself as the best player to have ever graced this planet with a scintillating hat trick, including a late trademark free kick to rescue a point.
Dad woke with all the grace of a man who'd been quaffing port since breakfast 'If I'm wrong, I'll eat my hat. No, actually, I'll eat a Christmas cracker!'
If you can find 150,000 people willing and able, I'll eat my hat.
I am writing this in response to Arwa Mahdawi's The Views article ("If plus-size modelling is glorification of obesity, I'll eat my hat", Gulf News, August 9)
Just before it, BBC commentator Thomas Woodrooffe had said "if there's a goal scored now, I'll eat my hat".
''If I can't answer one question I'll eat my hat!'' Kelly bragged.
If Parliament's new measures succeed I'll eat my hat, Their policies aren't working and that is simply that.
I'll eat my hat if that doesn't win." He wasn't wearing a hat, which concerned me (never trust a man who says he'll eat his hat if he is not in possession of a hat), but I liked his confidence.
Another bit of fantastic news is Adam Reach signing a four-year deal - although I'll eat my hat if he sees it out.
To be perfectly honest, I'll eat my hat if he gets beaten today - he might be short odds but he'll win.
"I've had guys say to me already, 'If you play until you're 30 I'll eat my hat!' "But look, if I make 30 I will be happy.
"I've had guys say to me already 'if you play until you're 30 I'll eat my hat!' But look, if I make 30 I will be happy.
If Burgham Park is a deprived area I'll eat my hat.