1 definition by joeyj26

Top Definition
If someone has a "J" in the beginning of their name, or a "J" in your name, JA! is a noise you make instead of saying the person's name if you're in a class room or somewhere quiet. JA! is a sound.
JA! JA! (JA!ohn) (JA! oe) (andJA!rew)
by joeyj26 May 29, 2005

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