英語候補a horse comes out from a gourdsomething appearing from a place you wouldn't expectsomething impossiblesomething ridiculous
天から降ったか地から湧いたかてんからふったかちからわいたか慣用句ことわざ未分類as if one had fallen from the sky or sprung from the ground(appearing) out of nowhere
木に縁りて魚を求むきによりてうおをもとむ慣用句ことわざ未分類to ask for the impossibleto be unable to accomplish something because one has chosen the wrong method