gotten one's undies in a bundle

form-of participle past

past participle of get one's undies in a bundle

Japanese Meaning

これは「get one's undies in a bundle」の過去分詞形です。

By the time the meeting started, someone had already gotten one's undies in a bundle over the schedule change.

会議が始まるころには、誰かがスケジュールの変更で既に必要以上に取り乱していた。

Sense（1）

past participle of get one's undies in a bundle