Retiree Henry Sims, straining to remember the one about the lady from China, was deeply shaken Tuesday by his fading bawdy-limerick recall. 'Last week, I blanked on the one about the man from Keokuk,' the 79-year-old said. 'And now this.' Sims said he could visualize the Chinese woman and the popsicle, but couldn't recall the accompanying rhyming verse. 'Can you imagine that?' Sims said. 'Me, Hank, forgetting a classic.' 