At the end of August, Robert Downey Jr. and his wife Susan confirmed that they’re expecting their first child together. RDJ is already a father to an 18-year-old son named Indio (who he is reportedly very close to). Not only will this be Susan and Robert’s first kid together, but it will be his first time to experience fatherhood from the beginning while sober. I’m really looking forward to hearing about it, basically. Robert can describe anything to sound like a Kerouacian adventure, and it will be a hoot to hear him describe the birth and the day-to-day dealings of a newborn. For now, though, we get to hear Robert describe how his wife’s pregnancy is super-hard on HIM. Oh, and they’re having a boy!

Robert Downey Jr. and his wife Susan Levin are expecting a boy! The 46-year-old actor spilled the beans Monday night on the Tonight Show with Jay Leno. “I am not permitted to discuss it,” he quipped. “I can’t say a word… We’re having a boy!”

The Iron Man star, who told Leno his baby-to-be is due in “late February,” is also dad to an 18-year-old son named Indio with his first wife Deborah Falconer.

“I don’t wanna be presumptuous,” he joked. “But I think actually [the pregnancy] has been tougher on me [than Susan!]… Just the hormones on and the mood stuff and the nausea and the whole thing.”

“I gotta be careful,” he added playfully. “I am gonna have to see my wife some time after doing this segment with you, and I think I’m already in trouble.”

The actor, who kicked his drug and alcohol addiction over six years ago. told Leno he plans to be a very involved dad.

He also appears to be a pretty good husband. Last month, the Sherlock Holmes: A Game of Shadows star took his pregnant wife on a romantic Hawaiian getaway.

So will he continue help his wife when the baby’s born, even when it comes to changing dirty diapers? “That’s just poop,” he told E! News in October. “That’s no big deal.”

[From Us Weekly]

Robert Downey III? God, I hope not. I hope they give the kid his own unique name. I really was hoping that Robert would have a daughter, though. I just think he would be great with a little girl, and she might… I don’t know, calm him down a bit. But I’m sure a boy will do the same. Robert and Susan are one of my favorite Hollywood couples, so I hope they continue to do really well together.

God, I’m so looking forward to Sherlock Holmes: Game of Shadows.

Photos courtesy of WENN.