If you're wondering why the Ushio puchi has a cow-peint bikini, it's for the same reason as Ushio's massive erm....fuel storage. If you drop the 'o' from the end of Ushio, you are left with Ushi, which is one way of saying 'cow' in Japanese.

Thanks Paracite for the translation !
And welcome back, by the way.
I understand now why Amatsu-chan is so fired up