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"It's exciting to have the first mother in the White House," he said during the interview with host Conan O'Brien. "We've had 240 years of fathers, father after father. Bald father, fat father, every kind of father. A great father can give a kid 40 percent of his needs, tops. Any mother, just a s--- mother, just a not-even-trying mother? Two-hundred percent."
C.K. also believes that a big part of being president is getting blamed for everything that goes wrong, something he believes Trump couldn't handle.
"Every time he's criticized, everything stops, and he makes everybody pay," C.K. said of Trump. "That's not how it works. We need somebody who can take abuse. Hillary Clinton can take abuse. She's been taking it and taking it. We've been hazing her, we've been holding her down and spitting in her mouth and yelling at her, and she just keeps working. So I'm totally for her."
So C.K. sums it up like this: "If you vote for Hillary you're a grown-up, if you vote for Trump you're a sucker, and if you don't vote for anybody you're an a--hole."
Watch Louis C.K. talk his case for Hillary Clinton and against Donald Trump on "Conan" below: