throw mud enough, and some will stick

proverb If malicious, damaging things are continually and persistently said about someone or something, they will begin to be accepted as true or credible by some people, regardless of how true they actually are. Even though it has been disproven several times, the candidate just keeps accusing her opponent of criminal activity during his time in office. Throw mud enough, and some will stick—judging by the growing sentiment among voters, at least. We're going to launch a major social media campaign to discredit her. After all, throw mud enough, and some will stick.