The girls were looking for fun, riding in the car. Sometimes they got themselves excited. Apparently they wanted a new sensation, so they offered a threesome to a strange young, handsome guy. After some persuasion and conversation, he agreed and went straight to work. The girls hooked up with him, gave him blowjobs, rolling on top, while two were fucking, the third fondled the couple.
The granddaughter had a crush on the old man, and the grandfather was still full of energy, he did not lose face in the mud. The old man worked out her hole, good granddaughter went well, although it would have been even better with a beer.