[ WP ] Two people discover a fountain of youth . The problem is that upon drinking the water you turn back into an infant . The two decide to take turns raising each other in order to live forever until one day one of them decides to break this agreement .

Thompson and Thomson looked at each other. 
 
 `` This is a fountain of youth'' said Thomson. 
 
 `` To be precise, a fountain of youth, is this'' said Thompson. 
 
 They both knew what this meant. They knew that an argument was to follow, one of them would claim that his current life was more difficult, the other would claim that he would be able to support the two of them currently since he had a better salary. 
 
 They decided to avoid doing all of that and flipped a coin. It landed on Thomson's open palm. `` Heads'' he announced. 
 
 The twins stared at each other for a few seconds and then decided that one of them probably should've called it before flipping. 
 
 `` Okay, I'm calling heads'' said Thomson. `` To be precise, heads is your call'' said Thompson. 
 
 Enthused by this decisiveness, Thompson flipped the coin up high in the air. It landed in the water. 
 
 Two hours later, Tintin was listening to Captain Haddock's colourful alliterations as they shopped for diapers.
