What is avantguard?

1). One who has travelled back from the future carrying with him/her a vast knowledge of Jiu-Jitsu Guard techniques.

2). Who so ever possessed AvantGuard status will get laid tonight.
3). Those who claim to understand the inner workings of AvantGuard, you must say "Ossss!"
4). An AvantGuard social movement. A grass roots movement of the people to reclaim the awesomeness of their sport.