David Limbaugh, the brother of Rush Limbaugh, falsely claimed that Media Matters for America tweeted a version of the following: "Did Rush Limbaugh's mother beat this man as a child? Brother David does not seem to be of the same pedigree."
The claim was also picked up by conservative blogger Dan Riehl, who responded to David Limbaugh by tweeting: "Damn, I didn't realize neanderthals came with pedigrees. You learn so much from mmfa."
In fact, the tweet in question came from Twitter user @DarienLimon1, who tweeted "@thinkprogress @mmfa Did Rush Limbaugh's mother beat this man as a child? Brother David Limbaugh does not seem to be of the same pedigree":
Media Matters has never written such a tweet.
UPDATE: David Limbaugh has corrected the record, stating: