interjection / noun / verb
oink
OYNK/ɔɪŋk/
A grunting sound made by or imitating a pig.
The pig lets out a loud oink when it sees food.

Etymology
Oink imitates a pig’s noise rather than deriving from a word with a separate literal meaning. As an interjection, it represents that sound directly.
In context
Oink oink oink oink like they're like squeaking. Yeah. Yeah, that's it. An actual pig sounds like this.