"That young rex, with the sour look in the waiting room, is he your boy?" asked Grrr 
"Yes, and he never had that look when he was younger..he was always happy...." she said.
"Humm. replied Grrr, why don't you go for a nice cup of tea while I have a man to man talk with the lad?" Grrr suggested.
When the worried mom left his office..he had the nurse send in the young rex.
"Son, your mother is concerned and..."
"I am NOT your son!!" the young rex snarled.
With his evil rex grin in place, Grrr looked ..just looked ..at the young rex..who, all of a sudden, truely  wished that he had kept his mouth shut.
"Fine, kid..just want to know where  we stand" Grrr replied..reaching out his massive razor sharp claw and putting on his scrubs..