Office muscle show for the coworker

We're in the office before an important conference, I'm tired of listening to what is being said around, and without realizing it, start stretching and yawning and flexing my amazing arms. I don't notice for the first five minutes that the person across the table from me (you) is watching my every move, and watching how the muscles move and bulge in my arms as I stretch. Gradually, I realize that you're watching, and I begin to tease you by flexing my muscles more and more deliberately, rolling up my sleeves, and flexing harder and harder while pretending to yawn.