The Soul Plane star previously revealed his boy, Kyle, was diagnosed with the developmental disorder as a child, but the now-26 year old has since managed to graduate from college and get a job.

Hughley admits Kyle still struggles with the need to stick to a strict daily routine, but he passed one small milestone recently when he offered to pump petrol into the family's car - much to his dad's surprise.

Recalling the incident during a new taping of Oprah Winfrey's Where Are They Now? show, the proud dad says, "He comes back in (to the house) and he gives me the receipt and the keys, and I could not stop crying because he did something he was afraid to do. And I just didn’t believe he could do it. He did it, and I held him and I said, ‘You’re going to be all right'."