his ass

Pronoun

nominative objective personal pronoun singular slang third-person vulgar

(vulgar, slang, the third person singular) he; him; himself.

Japanese Meaning

あいつ（下品な表現で、第三者の男性を指す） / その男（下品な表現） / 本人（強調して自分自身を指す場合）

His ass forgot our reservation again, so we had to wait an hour.

あいつがまた予約を忘れたせいで、私たちは1時間待たなければならなかった。

Sense（1）

(vulgar, slang, the third person singular) he; him; himself.

His ass is always late.