A try here, but may not be a riddle you want: one day, you are gonna meet the Stolic couple. From far away, you SEE Stolic (sy-stolic) because it's taller (Systolic is the point of greatest pressure, ring a bell? ). However, you cannot figure out the other one. Why? Because it's being dyed i.e. Di-a-Stolic.
Hope it helps.  
You meant "systolic & diastolic"?
所有跟帖:
                    •                    
                    systolic , sigh! Nice try indeed, hope you contribute more
                     -走马读人- 
                    ♂                    
                         
                    
                                                            
                         (0 bytes)
                        ()
                        11/05/2008 postreply
                                                07:40:14
                    
                                        
                    
                    
                                        
                        (0 bytes)
                        ()
                        11/05/2008 postreply
                                                07:40:14
                    
                    
