ants in one's pants

Noun

plural plural-only slang

(slang) The condition of being agitated and constantly fidgeting. / (slang) The condition of being sexually excited.

Japanese Meaning

そわそわして落ち着かない状態 / 性的興奮状態

Ants in one's pants make it hard for students to concentrate during tests.

そわそわして落ち着きがないと、学生たちはテスト中に集中するのが難しくなる。

Sense（1）

(slang) The condition of being agitated and constantly fidgeting.

Sense（2）

(slang) The condition of being sexually excited.