尻しりを持もち込こむ

expression, godan verb (-mu)

bring a complaint to the person responsible

Idiomatic expression meaning to take a problem or grievance directly to the person who caused it or is responsible for resolving it, rather than complaining to others. Often implies a somewhat confrontational or persistent approach.

• 彼かれは直ちょく接せつ上じょう司しに尻しりを持もち込こんで、プロジェクトの問もん題だいを訴うったえた。

  He brought the complaint directly to his boss, raising the project's issues.

• 文もん句くがあるなら、私わたしに尻しりを持もち込こんでください。

  If you have a complaint, please bring it to me directly.