A phrase originating from the minorities in southeast San Diego. It is usually used as an expression to brag, or to excite. In a broadsense, it is synonymous with the phrase "fuck yeah."
It is usually pronounced "LEZGO" or "LESSGO"
I'm about to ace that test! LET'S GO.
We're about to win that shit; LEZGO!
Also "Let's go" is a phrase said when you are ready to go and do something. Can relate to doing your taxes or aquiring sexual intercourse from a lady friend (or male friend) Or if you are just going to do something stupid.