xcrunner06's definitions
can be either someone whos a slut( or at least gives the idea that she's easy) and/or a really fast runner 
( usually the best is a combination of both, but being more of a flirt than actually putting out)
( usually the best is a combination of both, but being more of a flirt than actually putting out)
by xcrunner06 May 15, 2006
 Get the fast girlmug.
Get the fast girlmug.