Oops, they did it again! Carrie Underwood and Brad Paisley revealed the sex of Underwood's second child live onstage during the 2018 CMA Awards on Wednesday night (Nov. 14), and it's another boy!

"Remember last time when I accidentally revealed the gender of your baby? Tonight we're going to reveal something even more exciting — who your baby's father is!"

After that joke died down Paisley pressed further, using famous couples as a way to stand in for the baby's sex. "Johnny or June," he asked. Tim or Faith? George or Tammy? And finally, Waylon or Willie which didn't make sense, but that's when Underwood blurted out "It's a Willie!"

So that means it's a boy because, you know, Willie Nelson is a boy. Well, he's a man, but ... do we have to explain it to you?!

Paisley previously revealed the sex of Underwood's first child during the CMA live show in 2014, "accidentally" letting it slip during the opening monologue after Underwood wondered aloud if Garth Brooks might sign her baby.

"You could name him Garth!" Paisley exclaimed, setting off one of the all-time most viral CMA Awards moments ever. It made our list of their best moments ever.

Paisley later revealed that he himself only learned the gender of Underwood's first child — a son, Isaiah, who will turn four on Feb. 27 — seconds before the broadcast in 2014.

In a recent appearance on Good Morning America, the co-hosts said Paisley had not been told whether Underwood is expecting a boy or a girl this time around.

"I think she's taking great pains to ...," Paisley began before Underwood interjected, "I'm not telling Brad!"

"I mean, 'cause right now, I'm so in the dark," Paisley said. "She knows better. I'll blow it again."

Underwood announced she was pregnant with her second child on Aug. 8, the same morning that she revealed her 2019 Cry Pretty Tour 360. She has not disclosed her due date, but she is set to hit the road in May, and she has said that she will have some time to get back in shape before the tour launches.

Underwood and Paisley returned to co-host the CMA Awards for the 11th consecutive time in 2018.

Check Out the Top 5 Moments from the 2018 CMA Awards

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