10-9 is a police, and other 10 code using service, which has a meaning the same as, "repeat" or "say-again"
Can you please 10-9 your last transmission, It was a little 10-1 (distorted, broken up).
by Chris October 26, 2004
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Vine kid says 10+9= 21
by hiimawsome October 15, 2014
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Vine kid says 10+9= 21
by hiimawsome October 15, 2014
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From a distance, the chick looks like a 10. But as she gets closer, she goes from a 9, to an 8, to a 4.
Girl looks good from afar, but as she gets closer she goes from hot to not. She's a 10 9 8 4
by K-Sud78 May 5, 2009
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A vine that was made with a little kid.
guy: you stupid

l kid: no im not

guy:whats 9+10

l kid: 21

guy: you stupid
by Chadwick101 October 15, 2014
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A vine that was created by a younger boy and his older brother in which the boy says that the sum of 9 and 10 is equal to 21. This vine was scripted for him to say 21, and he is not stupid.
"What's 9+10?" - brother
"Twenni-Wan!" - younger brother
by thadefinekid February 13, 2016
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Person1: your stupid
Person2: no I'm not
Person:1: then whats 9+10
Person2: 21
Person1: your stupid
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