Sharp memory

Two elderly couples were enjoying a friendly conversation when one of the men asked the other, "George, how was the memory clinic you two went to last month?"

"Outstanding," George replied. "They taught us all the latest psychological techniques - visualization, association - it made a huge difference for me."

"That's great! What was the name of the clinic?"

George went blank. He thought and thought, but couldn't remember. Then a smile broke out across his face and he asked, "What do you call that red flower with the long stem and thorns?"

"You mean a rose?"

"Yes, that's it!" He turned to his wife. "Rose, what was the name of that clinic?"