May 04, 2012 at 2:50 pm

Scarlett Johansson & Robert Downey Jr: 'Ellen' Show!

Robert Downey Jr. and Scarlett Johansson make an appearance on The Ellen DeGeneres Show in an episode airing Friday (May 4).

The Avengers co-stars promoted their new action flick and also chatted about Robert‘s 3-month-old son Exton.

“He’s smiling and talking a little bit. It’s incredible,” said the 47-year-old actor, who debuted baby Exton‘s first pics on The Tonight Show with Jay Leno.

“No, he’s not talking,” Ellen replied.

“Well, I mean, you know. I think he is,” Robert said. “I go, ‘What are we doing? What’s happening?’ He goes [makes baby noises]. I go, ‘Really?’ Kind of like a bad date with somebody who is really small.”