On more than one occassion, Fraser has mentioned that he would like boobs added into Vanilla Minecraft so that the girls in his Minecraft server would have boobs, allowing him to identify them, and of course ogle them. Becky has agreed with him multiple times. The earliest occasion of this was in the Minecraft Awesome! Server Tour.
Note: Fraser has also expressed desire for Hats to be added into Minecraft, and even went so far as to ask Notch personally for them.