歯糞はプロ野球で言う3軍だから・・・

ちなみに

1軍
https://activity.mildom.com/activity_module/views/?series_id=1283&;week=1&check_id=b4b17722b5b2b24fec4ef08b45852515

2軍
https://activity.mildom.com/activity_module/views/?series_id=1284&;week=1&check_id=bc4b35cb2e12797060ead506885369ed

3〜5軍
https://activity.mildom.com/activity_module/views/?series_id=1285&;week=2&check_id=25011fc30b8552925c8b0b5c99311d16

のカテゴリだから・・・