Houston Texans' J.J. Watt returned to his alma mater to deliver the commencement address, but it's way he did afterwards that's getting all the attention.

After delivering a very inspiring commencement address, the UW grad made one more stop before heading home, according to nbc15.com.

The NFL star made a surprise visit to American Family Children's Hospital. He spent his time sharing laughs, signing autographs and posing for pictures with families.

According to staff around the hospital, J.J. Watt came on his own accord and his visit was not scheduled.