This technically wasn't drawn during the live stream, but was created around the same time, so for the sake of consistency, I'm adding it to the list.
A conversation on the IRC chat got this idea stuck in my mind and just had to be drawn. If you are somehow not familiar with the Simpsons, this is a parody of a scene from that cartoon. Just look it up and I'm sure you'll find the clip in question. As for why Zen has Keith stuck in his mind, it's probably the mental image Natani transferred over to him during this comic: [link]
Either that, or all the feelings Natani has been repressing the last month or so have been going to Zen.