On xmas Sushi7777, my little sis, and i were watching Popasia together when Neverland によって U-KISS was on. It 発言しました that U-KISS stood for Ubiquitous Korean International Super 星, つ星 (band).

miyuchan7: Look, U-KISS actually stood for something. I want Mona Lisa to be on.
Sushi7777: Mona Lisa によって MBLAQ?
miyuchan7: Does MBLAQ stand for anything?
Sushi7777: I dunno. What can it be?
miyuchan7: My Butt Lacks 尻, お尻 Quails.

We both started laughing.
I 検索 up MBLAQ, the band on Boxing Day.
It turned out that MBLAQ stands for...ahem....
音楽 Boys Live in Absolute Quality. =.=''
At least i was close...sorta.