Onee-chan, your breasts are so big! I want you to rub my penis as I suck milk out of your breasts! Can I, Cow-san?

What are you saying, you shitty little brat...

Naughty little boy...Come with me for a sec.

Ah! Such a lovely lad. Should be something like "Ach! Was für ein lieber Junge." or "Ach! Was für ein liebenswerter Junge."