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The "Aux" at the party is the owner of the music device currently plugged into the auxiliary cable, thus controlling the parties groove.
1. Yo man, stop hatin'... I'm the most lit Aux in this party!

2. Who's the Aux at this lit joint? Gang Gang lit-fam! ESKEETIT!!!!

3. Hey friends, who's Aux. They have impeccable music taste.
by 00deecee00 November 30, 2017
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2
aux is referred to Auckland city, the largest city of New Zealand.
I will be in aux from Friday.
by iwik January 22, 2014
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