A-kan-beh
Tug down on your lower eyelid, stick out your tongue, and say, "A-kan-beh!" It means the same thing as nah-nah-nah.

Acronym guide
An (ahn)
Christmas cake
Geta
Haori hakama
Happi coat
Kansai-ben
Kobe
Koseki
Home literature
Meiji Period
Mikoshi
Pat Morita
Mutual
Nakamozu
Natsume Soseki
Obi
Okuribi
O-furo
Osaka
Sada Masashi
Seijinshiki
Sendai
Shiromuku uchikake
Tanzaku
Tatami
Terms of address
Tsuno-kakushi
Yukata

A useful compendium of Mormon ecclesiastical and theological terminology can be found here.