A slang corruption of the word ganun, which in turn is a shortening of the standard word ganoon (ganon, gano’n).
Ganern?
Like that?
It’s like that?
Think of how the pronunciation of “Oh My God” has been stylized as ermahgerd.
The word ganern is often paired with pak as in “Pak ganern!”
Examples of multi-purpose usage:
Nasa Diyos ang pak, nasa tao ang ganern.
Ang hindi pumak sa pinanggalingan, hindi makaka-ganern sa paroroonan.
