What does Genibus Nitito Canus translate to?

Answer 1

Genibus Nitito Canus looks like an attempt to translate "On your knees, dog!" into Latin, but there are difficulties:

1. The form nitito does not exist. It appears to be the stem of the verb nitor, niti "rest on" plus -to, the active ending of what is known as the second, or future, singular imperative. However, as a deponent verb nitor requires the passive ending -tor in this case; the correct form is nititor. (A qualification: medieval Latin was not particularly shy about transforming deponent verbs into active ones, so it's not impossible that nitito reflects an actual medieval usage.)
2. Canus is an adjective meaning "white" and by extension a noun meaning "white-haired man". It cannot be a way of addressing the person being spoken to; that form would be the vocative Cane. If the word "dog" is intended, that would be Canis.
3. An actual Latin request that someone bow down in submission would probably not use the verb niti in the first place, but rather some variant of genu flectere, "to bend the knee", such as genu flecte/flectito or simply the phrase ad genua, "to [your] knees".

On your knees dog.

Answer 2

"I am king", or Latin phrase that Triple H uses "On your knees dog!".