Louisville businessman Matt Bevin, who is challenging Kentucky Senator Mitch McConnell for the GOP primary, has claimed that gay marriage will lead to parent-child weddings.

“If it's all right to have same-sex marriages, why not define a marriage – because at the end of the day, a lot of this ends up being taxes and who can visit who in the hospital, and there's other repercussions and things that come with this – so a person may want to define themselves as being married to one of their children so that they could then in fact pass on certain things to that child financially and otherwise,” Bevin told Christian conservative Janet Mefferd on Wednesday.

“Where do you draw the line?” he rhetorically asked.

“And, in fact, a person can arbitrarily draw it here, why not. Could someone else draw it arbitrarily somewhere else? There needs to be a rule of law. Marriage has for millennia been defined as that between a man and a woman universally.”

Bevin asserted that he would be a strong opponent of marriage equality and criticized McConnell's ties to the federal judge who recently struck down part of Kentucky's constitutional amendment which prohibits gay couples from marrying.

“It is no surprise that Judge [John C.] Heyburn was Mitch McConnell's general counsel and McConnell recommended him for the federal bench. Kentucky deserves better,” Bevin said.

A spokeswoman for the Bevin campaign told the AP that the candidate was not connecting marriage equality with incest but speaking of “hospital visitations and benefits.”