Rat Run
Using small residential side streets during a commute, resembling the route a rat would take in a maze. Growing in use since the invention of Waze and other commuting apps.
Dave's commute had become awful due to the new development, so he decided to rat run, saving a few minutes off his drive.
Rat Run
Running naked with your 'rat' (penis/ vagina) out.
Yeah lad! Let's do a rat run.