Sandra Bullock

Sandra Bullock

Sandra Bullock has teamed up with TV comedy legend Betty White to poke fun at actor Ryan Reynolds in a new online skit.

The three stars filmed a comedy sketch for the Funny or Die website, and Bullock took the opportunity to make a mockery of her The Proposal co-star.

Set as a spoof behind-the-scenes look at Bullock and Reynolds' new film, White is seen mistaking the actor for her assistant and barking orders at him, calling him an "ab-crunching jacka**."

While Bullock also pokes fun at him, adding: "Who is on the poster of this film? I am on the poster of this film.

"No one knows who you are, Ryan! Betty White? They know who Betty White is. Sandra Bullock? They know who Sandra Bullock is!"

This sketch comes just days after funnywoman Bullock revealed that she was impressed with her co-star Reynold's naked body, giving him just a four out of ten.