たまごアイス おっぱいアイス
Referred to by names such as [i]Tamago Aisu[/i] (たまごアイス) or [i]Oppai Aisu[/i] (おっぱいアイス), it is ice cream frozen in a balloon-like container.  The container is supposed to be somewhat egg shaped, but unfortunately the shape is more similar to a condom's and has a small reservoir tip opposite of the sealed opening. The tip  is supposed to be where you cut open the container to eat the ice cream inside.  Alternatively some of these are reminiscent of a breast in shape instead, thus the other name [i]Oppai Aisu[/i] for the same product.
ice cream egg