Reese Witherspoon stopped by Conan on Tuesday night to reveal a very fun fact about herself: she's actually 63 percent Irish. While the Big Little Lies actress was blissfully unaware of her heritage until recently, she told the late-night host that it actually makes so much sense. "I'm a really good drinker, I love St. Patrick's Day, potatoes are delicious. I'm looking forward to meeting all my cousins," she said. She then busted out her best Irish accent which, bless her heart, ended up being pretty terrible. While we're sure Ireland would welcome Reese with open arms any time, she might want to tuck that accent away for good.