あめおとこ
man who brings the rain with him wherever he goes; man who is constantly unlucky with the weather
Noun
トムは雨男あめおとこだ。
Every time Tom shows up, it rains.
あの人ひとが出でかけるときは必かならず雨あめが降ふるので、雨男あめおとこと呼よばれている。
That person brings rain with him whenever he goes out, so we call him "rain man".