TV commercial depicts giant nipple UFO squirting milk into children's mouths

https://www.youtube.com/watch?time_continue=17&v=1KPel8Wecjw

This is a TV commercial from Japanese milk company Rakunoh Mother’s. What's the deal with this Uddered Flying Object (UFO)? For the cattle mutilation-inspired backstory, see the equally unusual TV spot below.

https://www.youtube.com/watch?v=p9HoqvOWpgA