Google's hallways are littered with exercise balls, and in the past 2 weeks, I've taken to sitting on a yellow exercise ball instead of in a desk chair. When I get deep into thought, sometimes I bounce up and down on it.
Today I was coding away, sitting on the exercise ball as usual. Suddenly, from behind me, I hear Joby's voice say, "Hey, it's time for our group meeting." at the same time that I feel my exercise ball bump gently below me.
I turn around, while saying, "Did you just kick ..."
When I see Joby's little smile and simultaneous looking away to the side, the culprit is clear without me needing to finish the question.
"Joby, please don't kick me in the ball," I say.