so I decided to put a little more effort into this after commentary, so I looked around and found this. The object I am holding is indeed a marshmallow bazooka. The target in this case was Randall Munroe, famed NASA scientist and author of the webcomic XKCD. I, along with a few friends, were attending a three hour lecture of his at MIT SPLASH, a weekend of classes for highschool students taught by undergrads and members of the community. The title of the particular lecture was "Solar Panels, Hand Grenades, and Blowing Up the Moon: How to Think About Energy" and contained the energy produced by burning the body of Darth Vader, the horsepower of yoda, and how fast the earth would be pushed out of the solar system if half of the moon turned into antimatter (49 mph iirc). The bazooka was given to randall by his father for no particular reason, and thus he gave it to a random audience member, me :D.