Bottom Biting Bug

There's a new hit song in Japan called "Oshiri Kajiri Mushi" (or in English, "Bottom Biting Bug"). It's a kids' song with silly lyrics about a bug that bites peoples bottoms... and something about how city bottoms are bitter. This weekend the song climbed number 8 on the Japanese charts.
The vocal performance sounds like a Japanese version of Alvin & the Chipmunks, or maybe Barnes & Barnes, whose legendary "Fish heads" song still sounds as weird today as it did when it was recorded. "Biting is important business" indeed.
See for yourself:



And for those of you that feel the need to sing aling, here are the lyrics:

Oshiri Kajiri Mushi (Bottom Biting Bug)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Kajitte, kajitte (Biting, biting)
kajitte nanbo (biting is important)
kajitte nanbo no shoubai da (biting is important business)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Oshiri to Oshiri de (Bottom to bottom is)
oshiriai (getting to know someone)
Kaba to kaba to de (a hippo and a hippo are)
kabaiai (watching out for each other)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Chijinda oshiri wo kajiri mushi (Bugs that bite shrunken bottoms)
"Kajirarrechatte cho li kanji ("I got bitten and it felt awesome")
Oshiri Kajiri Mushi (Bottom Biting Bug)
Oshiri Kajiri Mushi (Bottom Biting Bug)
Tsumetai oshiri to (cold bottoms and)
katai oshiri to (hard bottoms and)
hekona oshiri to (caved in bottoms and)
shinabita oshiri (shriveled bottoms)
kyodai na oshiri wo kajiri mushi (Giant bottom biting bugs)
"Tokai no oshiri wa nigakatta..." ("Those city bottoms were bitter)
oshiri kajittarara (If you bite a bottom)
oshiri kajitterno (Even if you bite a bottom...)
Oshiri Kajiri Mushi ra ra ra ra (Bottom bitiing bugs la la la la.)
Kajitteru (Biting on...)
Oshiri kajiru toki (When you bite bottoms...)
Oshiri Kajiri Mushi (Bottom Biting Bugs)
Oshiri Kajiritai (I want to bite bottoms)
Oshiri Kajiri Mushi. Oshiri Kajiri Mushi (Bottom Biting Bugs)