Scary monster noises

So a few days ago, while Reece was sitting in my lap, I growled at Bodey.  It startled Reece, and he immediately scrunched up his face and stuck out his lower lip like he was going to cry.  I didn't know if it was my growl that had startled him or if he was just upset, so I did it again, and he responded the same way.  Cruel as it may sound, I wanted to get it on video, so I got my camera and tried it again, but he had gotten over his fear and thought it was funny.  Since then, I tried a few other loud noises (again, just to see if I could capture his reaction on camera--just once, then I'd stop scarring him for life).  The first video is his reaction to my old growl, the next one is his reaction to a new noise.  I won't do it anymore.