Sandy was floating over Greenland, spreading his dreams, when he felt a light pressure just behind him on his dream cloud and turned with a smile, knowing it was Jack. "Hello Sandy, how are you doing?" Jack asked as he lowered his body onto the cloud.
Before he could answer though, Jack asked another question. "Is it true that you are made from your dream sand?"
Sandy sighed silently before he shook his head no. He had heard the rumors of his body being made from the very sand he controlled, what those who had started the rumors realized is that before being called by MiM to be the Guardian of dreams he was a star pilot. His body, in fact, was made from flesh the same as the other Guardians.
He grabbed Jack's hand and made him feel his skin. "Heh, guess those minor winter spirits are wrong about what your body is made of. It feels like flesh not sand to me." Jack joked as he pulled his hand back, which made Sandy soundlessly chuckle.
Having his question answered Jack leaned back and just enjoyed the comfortable silence that came with being around the Sandman while Sandy went back to his work, enjoying Jack's company as well. The two of them made the attempt to spend whatever time they could together and had done it since Jack had first met Sandy after he became the Spirit of Winter.
New head-shot, Sandy is not made of sand as some believe, you have to remember in the books he was a star pilot during the Golden Age long before he became the Sandman and Guardian of dreams so there is no way his body could be made of sand. Even in the movie, his body looks like it's made from flesh not sand.