I am convinced the ability to make realistic fart noises is a Y-linked dominant gene. This conclusion stems from extensive data gathered from the Smith family genome. It's all him.
Brock is amused by something different, everyday. Though, I have noticed one factor seems to remain the same; the stupid-er I seem to look or behave, the funnier he thinks it is.
Just a goof.
These videos were all recorded on the 10th, I believe.