noun
man used by a woman to pay for her meals
Dated slang from the bubble era; a play on アッシー君 (man used as a driver). Refers to a man who is taken out mainly to cover meal expenses.
バブル期には、メッシー君という言葉が流行った。
During the bubble era, the term メッシー君 was popular.
彼女はメッシー君を連れて高級レストランに行った。
She took her meal-paying guy to a fancy restaurant.