Iron Man Meets Aqua Man

I'm a big Iron Man fan. I was geeking when the following exchange happened in the first film:

Tony Stark works on his repulsor technology in the form of an armature that shoots energy from his palms. His assistant, Pepper Potts interjects.

Pepper: "I thought you said you were done making weapons?"

Tony: "I did. This is a flight stabilizer. It's completely harmless."

The "flight stabilizer" fires and propels Tony backwards in violent fashion. It was a funny scene, but impossible, right? Checkout the video below. Geeking... again.