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Mou ikkai is the romaji for もう いっかい meaning 'one more time'. Popularized by Wowaka in his song 'Rolling Girl' and has come to be a staple in his music. In Rolling Girl it is written like this: もう一回. Though Wowaka has sadly passed on, his music has inspired many other vocaloid artists to start in the first place. Mou ikkai is now in many songs and even included in one of my personal favourites, Amanojaku.
Hatsune Miku: Mou ikkai, mou ikkai, watashi wa kyou mo korogarimasu to.
by McKaylaisBread January 07, 2021
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May 18 Word of the Day
When you think up something brilliantly righteous while baked.
X: I had this great highdea last night
Y: You clearly were philosopher stoned.
by TripleWest September 03, 2012
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2
Japanese (Romanji) for 'One more time'.

For people who don't understand the meaning of 1 more time, google for the touhou_ikkai.swf.
Pete: "I've been watching the 'Mou ikkai' vid over and over again and I just can't stop it. "
John: I did stop it once but put it right back on...
Pete; Ye, it makes you feel empty inside doesn't it?
John: I'm listening to it right now, but I still miss it.
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