locker room talk

noun1

1. •
   (slang) A type of boastful, lurid, chauvinistic conversation that commonly takes place in all-male locker rooms, especially such conversation concerning sexual conquests and the like.

   • This was locker room talk. I'm not proud of it. I apologize to my family. I apologize to the American people. Certainly I'm not proud of it. But this is locker room talk. — 2016