to braun
To lie defiantly by staking your reputation on what you are saying and swearing to it on the lives of your family.

To lie like Ryan Braun
Tommy: "What did you tell Sue last night when you got home at 3:45 a.m.?"

Rudy: "I told her the car broke down, but she didn't believe me so I brauned until she was convinced. It was so easy, I am going to braun every time she doubts what I'm saying."