strapping Kyushu lad; virile son of Kyushu
Stereotypical image of a strong, masculine man from Kyushu, often with a bold and straightforward personality. Used both affectionately and humorously.
He's a true Kyushu lad, able to hold his liquor.
The spirit of a Kyushu man is manly and dependable.
Kyushu, the region; 九州男児 specifically refers to a man from Kyushu with stereotypical masculine traits.
Literally 'boy' or 'male child', but in 九州男児 it takes on the meaning of a grown man with regional character.
Compound of 九州 (Kyushu) and 男児 (boy, man). The term reflects a regional stereotype of Kyushu men as strong, bold, and masculine.