These inventions whose mother br We all know as necessity; br Too hard to deny this bastard child br While it suckles at her breast, br Especially when it's announced in public documents, br And under "mother's name" on the birth certificate. br But who the father is we hardly ever know; br Unless the invention proves successful. br Then the fathers start crawling out br From the woodwork, line up around the block br With presents and convincing br Baby pictures as proof.