CONAN O’BRIEN always knew he was Irish, he just didn’t know how Irish he was.
Born in Massachusetts to Irish Catholic parents, O’Brien’s ancestors emigrated to America some 150 years ago from their original home in County Dublin.
But, like most Americans with family originally from the Emerald Isle, the writer and talk show host has often wondered just how Irish he really is.
Or at least, that used to be the case until the The Simpsons scribe decided to get a DNA test.
According to the man himself, it all started during a routine physical with his doctor, who offered to run a DNA test for him.
Two weeks later, he got the results.
Speaking during an appearance on The Late Show with Stephen Colbert, when his doctor called him to deliver the results, he was quick to admit to the comedian "he had never, ever, ever had a DNA result like this before" telling O’Brien "you are 100% Irish."
"I've never seen a 100 percent anything," the doctor added. "I've been doing this a lot, I've seen 93.5 [percent], I've seen 96.1, I've seen 97. No one is 100 percent Irish."
The doctor, who had been conducting these kinds of DNA tests for over a decade, went on to explain to O’Brien that there are many people in Ireland right now that aren’t even 100% Irish.
There was one final twist though.
Asking his doctor what the results could possibly mean, his doctor offered the following reply: “What does it mean? It means you’re inbred.”