Throw it on 'er

This is probably a "guy" phrase. I found myself using it the other night in reagrds to driving.

throw it on 'er v: to accelerate as quickly as possible. You'd better throw it on 'er so you won't git ran over. It could be a command as when the po'lis is behind ya. Throw it on 'er, Bubba, we got company. I've also heard it in commentating on someone who is showing off in there car by spinning the tires. "Well, throw it on 'er, Jack" (screaching wheels in the background). (Jack and Bubba are not necessarily real names.)