It means to take back or a person just got owned by what he just said.
It is to admit what you said was wrong
its words
드셨나요 = did you eat
It means you were wrong about what you said. You have to eat your words as they were incorrect.
eat eta ate tea
your words
Consume, feed, eat on, eat up, run through.
feed, munch, chew, eat of course
eat eta ate tea
EAT ME
Your own words.
To 'eat your words' is to acknowledge you spoke previously in error Phrase is literal and colloquial, origin likely indeterminate
You can eat meatballs. You also can eat muffins, mahi-mahi and macaroni.