Actor Robert Downey Jr., who is awaiting the birth of his daughter with wife Susan, is confident that the experience will be "great".

"It should be great. I wonder (what) a little girl Downey will be like. I'm sure she'll let us know," accesshollywood.com quoted Robert as saying.

The child, who is due in November, will be Robert and Susan's second child after their two-year-old son Exton.

Robert has found fatherhood to be "easy" so far, but not so much with Exton's adventurous ways.

"Yeah, he just wants to sling open drawers and grab knives. It's really not stressful at all! When he first started walking, it was kind of like, alright, this is a little bit exhausting and terrifying, and then he kind of smoothed out and now he can climb things," he said.

Robert once had a scary experience during his own childhood.

"I just remember when I was 2 or 3 or 4 years old, I found my way to the top of the refrigerator and I hung out there, that was like my spot until I lost my footing and banged my head on the radiator," he recalled.

"I remember some doctors squeezing my head... I don't want him to fall off the refrigerator."