Ryan Reynolds revealed that he was the one in the Deadpool costume dancing behind Conan O'Brien when he hosted the Oscars ...

"Yes you were, yes you were," O'Brien confirmed.The moment they were referencing was a song-and-dance ... "Deadpool & Wolverine," and then revealed that he was the one in the Deadpool costume ...

The moment they were referencing was a song-and-dance bit in which O’Brien was ... that really was you as Deadpool,” O’Brien said. “No one knows.” Reynolds had a bit of fun with that ...