My female colleague accidentally mentioned, under the influence of alcohol, that she has a date tomorrow because it's her boyfriend's birthday. Even though she let it slip in front of everybody, no one pointed out that it was K's birthday.
こんにちは！
ご質問ありがとうございます。
ご質問について、いくつか言い方が考えられますが、例えば、
My female colleague accidentally mentioned, under the influence of alcohol, that she has a date tomorrow because it's her boyfriend's birthday. Even though she let it slip in front of everybody, no one pointed out that it was K's birthday.
『同僚の女の子がお酒を飲んだ勢いで口が滑って明日彼氏の誕生日だからデートするとみんなに言ってしまったけど、誰も明日はK君の誕生日だと指摘しなかった（突っ込まなかった）。』と言えます。
役に立ちそうな単語とフレーズ
point out ～を指摘する
参考になれば幸いです。
日本 
