I felt I needed to have the characters acknowledge the fact that Zoey was there when they found John-Frog and why she didn't just kiss him and de-frog him on the spot. Today's comic is the reason. The whole kissing someone by proxy bit with a toothbrush actually comes from my real life. In college, my freshman year I moved rooms due to a douche I was assigned to have as a roommate... The second guy I lived with in the dorm ended up having the same toothbrush as I did at the time. We each kept wondering why "our" toothbrush wasn't where we left it after brushing our teeth for about a week. The line of kissing each other by proxy came up.