1. Used in and around the NY Rave scene.
To get out of a situation,
To get INTO a situation,
Overall to preform a task believed to be great, awesome, or all around epic.
2. Used by strangers to name drop in an attempt to get into a party.
John Doe: "Man the party is SOLD out"
Jane Doe: "That sucks I John Haxx'd my way onto the list"
John Doe: "I don't know how you do it"
Raver 1: "How did you get away last night?! EVERYONE got arrested!"
Raver 2: "They tried to arrest me but I John Haxx'd my way out of it"
And when being used to name drop...
Bouncer 1: "Sorry Sold out, gotta go"
Random Raver: "I'm with John Haxx though!"
Bouncer: "Oh Alright never mind come on in"