• Double-clicking the drawing of Popgoes on the ground will trigger the "Pop Goes the Weasel" melody. The reason why this Easter egg exists is because Popgoes is a weasel, and is officially known as "Popgoes the Weasel", which is a pun on the melody name.
    • Popgoes the weasel is from the game Popgoes where he is the main antagonist.