Before Jim Harbaugh took the podium at Michigan's post-season awards banquet, he was letting out his best belly laugh and spreading holiday cheer.

The Michigan football coach and his wife, Sarah, paid a visit to C.S. Mott Children's Hospital in Ann Arbor on Tuesday, dressed as Santa and Mrs. Claus.

A team spokesman says the Harbaughs spent two hours visiting patients, some of whom had no idea it was Harbaugh underneath the fake beard.

This photo was passed along to MLive by Luke and Ashley Voss, who were admitted to C.S. Mott while awaiting the arrival of their first child.

As it turns out, Ashley's water broke shortly before they snapped this photo with the Harbaughs.

Jim Harbaugh has made it a common practice to visit children's hospitals during his coaching career. His Harbaugh Fund donated $50,000 to C.S. Mott Children's Hospital in April to purchase virtual-reality viewers for young patients, after the premature birth of his youngest son, John, in January.