1. The guard positioned to the left of the center in a offensive football formation. Usually the better guard because most quarterbacks are right handed therefore the better guard is protecting the quarterback's back.

2. A guy's best friend. People started using it in reference to the left guard position in football.
1. You play left guard because you're better than he is.

2. You saved me big time. You're my left guard, man.
by hyracatherium January 29, 2008
Get the left guard mug.