Horn in a box prank

So the same air horns that are in my car were in this box that was wrapped to look like a simple present. The air horns were hooked up to an accelerometer so that whenever the box was touched or bumped it would trigger the air horns to go off and make the person freak out. So back in high school some friends and I decided to give it to the Principal and with some help from some faculty we were able to pull it off as a senior prank

After we pranked the principal she told us to go prank the other assistant principal in the lunch room

Text and Images 2015 Frank Magazu.