I used to do this to babies

That's a picture from the infant research lab where I worked during my last two years of college. In the photo, you can see a woman pushing buttons on a small control panel. The buttons administer electrical shocks of increasing severity, designed to - kidding! Just kidding. The buttons actually indicate which direction the infant in the testing room is looking. Our research dealt with music and language acquisition, so the stimuli the infants were orienting to were aural. It actually takes a considerable amount of practice to accurately code the sessions, and infants were precious experimental commodities. This meant that whenever someone new started in the lab, we all got to take turns sitting in the testing room, slumping down in the chair, and doing our best impressions of practice babies. We were all pretty skillful (and much trickier than most of the real infants), but this grad student Erik was the best. He had the slightly vacuous, glazed, wondering look down to a science, and would usually play with his hands a few times and twist around in the chair as a bonus. I hope that wherever he's working now, he's putting those talents to good use.