Sorry, no boobs today! Zee's effectively the personification of breast envy, so to have her be anything but absolutely flat would defeat the purpose of her character. My reasoning for designing her in this way is twofold - First, I would have a simple character for testing out different animation techniques (she's practically just a ball on a stick), and second, I would be driven more towards using other people's characters for proper lewd animations. Doesn't mean there aren't going to be exceptions, though!
My export format of choice is .webm, but I'm having difficulty finding any art sites that will let me upload them. Because of this, I'm forced to convert to gif, which has the potential to completely butcher the quality depending on the technique that was used. This was one of the very few animations that managed to make it through the conversion mostly intact. It's likely the lack of variance in colours - I need to study what made this one work.