Alec Baldwin has jokingly described his on-screen kiss with Jennifer Aniston on 30 Rock as 'painful'.

The actress - whose stalker character dresses up like a maid to entice Alec - locks lips with her small screen co-star for the first time since and Ross and Rachel on Friends.

Alec told New York magazine, “It was painful. I mean, every man who's had to make out with her in TV and movies - I don't know how they do it!”

When asked if he thought crazy women are better in bed he laughed, "I hear it's true. I hear from my friends it's true.

“I will say this on the record - I've never slept with a crazy man!”

See Jen puckering up below followed by her hottest on-screen kisses: