What would be a witty answer to ordinary sexism at work?

I work in a large famous web company, approximately 400 employees. Today one of the management recent recrutement gave a short speech in french whereas she is not, in front of the 400 employees. In between two speakers, out of nowhere, the big boss got really excited, so he took the mic, and said, "we are all glad that you speak french now, it's very sexy".It was very awkward, it is no big deal, but even though I am a man, I felt really bad, somehow betrayed. People are posting anonymous comments on the wall of the cafeteria. There are loads of...Read more