pink belly

Not all of my friends can be considered potential PHD graduates of Ivy League schools. One friend proved this while trying to solve a pool diving problem. He enjoys jumping from the top of a slide that towers over his swimming pool. The problem is that the crowd-pleasing belly flops from 10 feet up cause him a very painful pink belly condition. He blames the water for being too hard to give way as he crash on to its moist surface. His solution? He poured a few gallons of water softener into his pool. I don't think it worked because on his next dive, he bounced a couple of times on top of water before finally sinking in a pool of pain and curses...