Apa means "What" In Indonesia
Reviews for "APA!"
APA
papa
apa itu? lol
You can hear the pain in those APAAAAAAA
Just like @BBank mentioned, Apa is dad in hungarian, but it is also how its pronouncen in many other cultures.
Now for a quick reviwe of Dad in diferent languages
Dada (Nahuatl), Papa (Espanish), Papo (portuguese), Baba (Albanian), Tata(russian).
there are theories as to why this is and the evolution of the vocal chords, but i sont know much about it