Yes, that is a fart pad. Made with charcoal and supposedly activated when "needed," one can feel free to rip one or two at any point. I realize that some of you might be giggling at this while others are secretly wondering where you can find one. Have no fear, I've done the work for you. Here is one already for purchase on ebay.
While I was on a quest to find a video to go along with this, I typed in "farting" on Youtube and this was the first thing that came up: