London - Tina Fey is surprised Taylor Swift can't take a “lighthearted joke”.

The 42-year-old comedian - who upset the country singer, renowned for dating a string of Hollywood stars, by warning her to “stay away from Michael J. Fox's son” and advised her to take “some me time” while presenting the Golden Globes with her pal Amy Poehler in January - admitted she is very shocked that the 23-year-old star was so hurt by the jokes.

She told Entertainment Tonight at the premiere of her new movie Admission on Tuesday night: “If anyone was going to get mad at us, I thought it would be James Cameron. I did not see that one coming. It was a joke. It was a light-hearted joke.”

When introducing director Kathryn's latest film, Zero Dark Thirty - about a CIA agent tracking terrorist Osama Bin Laden - Amy joked that Kathryn understood torture because “she spent three years married to James Cameron”.

Kathryn was married to Terminator and Avatar director James - who is notoriously difficult to work with - from 1989 to 1991.

The 30 Rock star's comments came just hours after her co-host Amy apologised for upsetting Taylor.

The Parks and Recreation actress said: “Aw, I feel bad if she was upset. I am a feminist, and she is a young and talented girl. That being said, I do agree I am going to hell. But for other reasons. Mostly boring tax stuff.” - Bang Showbiz