ひょうたんからこまがでる

瓢箪から駒が出る

something appearing from a place you wouldn't expect; something said as a joke actually happening; a horse comes out from a gourd

N3Expression
Expression, Ichidan verb
something appearing from a place you wouldn't expectsomething said as a joke actually happeninga horse comes out from a gourd
Expression, Ichidan verb
something impossiblesomething ridiculous