瓢箪から駒が出る
1
inesperado;salido de no se sabe dónde;imposible;increíble
1
something appearing from a place you wouldn't expect;something said as a joke actually happening;a horse comes out from a gourd
2
something impossible;something ridiculous
Other forms
ひょうたんから駒が出る 【ひょうたんからこまがでる】