A vocaloid who is in her teens her voice source is Lia(Japanese singer) .
She sings most of the Kagerou Project by Jin(Shizen No Teki-P)
Friend: hey whats that
You: this is IA
Friend: dude she's pretty
You: you should hear her sing
by Ninja Goku182 September 19, 2013
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In all seriousness. For when you post something that's completely stupid, and you want to change the note to a serious one.
This thread is epic.
But IAS, never post again. Ever.
by SpammyMcSquirrel July 27, 2008
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Itchy Ass Syndrome;

Chronic itchiness of the buttocks/rectum area. Does not include lower back. Usually only lasts for one day, but can persist for longer. If symptoms last for more than a week, consult a doctor.
"Man, I've got a serious case of IAS - I need to get out of here so I can scratch it"
by Brad Arnold May 15, 2008
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Ias value education, friendship and acceptance above all else. They put maximal effort into everything they do, and are clever and intuitive. However, Ias are all typically potential psycopaths who have a hard time talking about their feelings. They are one of the most loyal friends you will ever have- you will have a very hard time getting rid of them, since they are also somewhat clingy. But be glad if you ever meet someone named Ia- although they have too many negative qualities to count, they are also loyal, kind, have good memories, and will stick with you to the end of the line.
There is a person named Ia in this nearby vicinity.
by iiinvo February 1, 2019
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In A Second.
When you are busy doing something and someone asks you to do something and you know you aer never going to do it use this term and hope they forget about it.
Kevin: Can you look after the kids.
Brittney:IAS *drives away*
by Kandylicious March 6, 2008
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the best department in swifts foundation, owned by mommy vyrella and mommy ghosc. agents are referred to as munchkins and live a comfortable life locked in vy’s basement. ia agents do spooky stuff like crack codes and sit in corners on omega staring at cute fp.
L-0 FP: how to ia?
L-1 FP: i think ping every O5 and ask for ia tryout! they told me i was blacklisted and i think that means i become ia soon!
by vyrella July 18, 2020
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For when lol, hehe, haha etc are too much and something has simply made you smile.

IAS Dude that video was so good!
by Frank Saget March 23, 2011
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