After she hooks you with her experienced sublime blowjobs, from practice on 1,000 unwashed peckers - some of them congoid - you slip the brass ring on her finger. After the wedding ceremony, she immediately begins inflating 10 sizes, starting by tossing cake chunks down her ravenous gullet. A couple years pass and you're ready to stop shooting blanks. However, her pregnant corpulence has induced infertility: you only end up blasting down range at target dummies. No sane man wants a walking larder. She doesn't divorce you, you become a "good" statistic. The bad part is, her personal growth has manifested itself physically so much so that she's no longer capable of properly washing and wiping herself.  You wash her ass.  You tell yourself you're a dutiful man of your vows. You love her, for better or worse:  You want to wash her ass.