Dave Coulier "laughed out loud" when John Stamos came to see him wearing a bald cap.
The 65-year-old actor - who starred alongside John in the classic sitcom 'Full House' - recently announced that he had been diagnosed with Non-Hodgkin lymphoma and shaved his head as he began his cancer treatment but when his friend tried to cheer him up, he was "sorry" to see that a lot of people had a problem with the comedic stunt.