そんなバナナ

Meanings

1

no way!; what nonsense!; how can that be?

jocular, humorous

Jocular, humorous interjection expressing disbelief or rejection of an absurd statement. A pun on そんな馬鹿な (sonna baka na).

See also: そんなばかな

「明日あしたから会かい社しゃが休やすみだって」「そんなバナナ！」
"They say the office is closed from tomorrow." "No way!"
彼かれが宝たからくじに当あたったって？そんなバナナ！
He won the lottery? What nonsense!