A third string is the backup to your second string booty call hoe. Definitely unwanted, they're an easy and guaranteed lay.
Fundo's second string hoe was busy pig roasting, so Fundo called up his backup to his backupe. Though he didn't really dig her like that, he knew that she was a third string hoe and that anything goes.
by authOOr July 07, 2006
Distant contacts when making certain illegal purchases. Usually utilized when there's a shortage in your immediate supply, causing you to have to call people you normally avoid to score from.
During the drought of December 07, Derek was forced to call some third strings.
by Wreck'D December 27, 2007