A term popularized by the video-sharing site youtube.

This term means that somebody/someone or something isn't working, or functioning to their full capacity.

This can be used as a synonym for MIA on aim or msn.
1) www.youtube.com: "we're updating now, but we'll be 100% back in a bit"

2) Bill: Dude, are you OK? You don't seem yourself..

Bob: Yeah, I've kinda been not 100% this week, ya know?

3) user1: hey ima b not 100% 4 a bit

user2: its all good
by vic_j_orl May 24, 2009
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A show where every character you feel empathy for gets brutaly murdered.
Wanna watch the 100? Nah everyones dead
by Long_schlong_dude100 December 28, 2020
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4 in binary

the bestest grade in the world
Coach: How many push ups did you do?
Student: 4
Coach: I gave you an assignment to do 100...
Student: I did 100!
by Pillar of Autumn September 11, 2011
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a slang term used to agree on something or just a straight answer "yes"
You:Hey wanna go to the mall
Me: 100 lets go
by Johnny Sak July 07, 2010
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A term used to describe when you are not feeling well, or someone is not looking good.
"How do ya feel Beavis"..."I'm not 100 Butthead"

"How was she Beavis" (after a blind date)..."not 100, but thanks for asking Butthead"
by howzerfet January 06, 2005
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