|Michael Fassbender and Keira Knightley|
Speaking about Michael - who was carried out of the party on his friend's back - a source told The Sun newspaper: "Michael was politely asked to leave. He was in good spirits but it was becoming a bit of a handful for the other guests.
"He was grabbing his co-stars and waltzing around the room with them. He lita a cigarette indoors and that was the point it had gone too far.
More celebrity gossip from IrishCentral
U2’s Bono set to become billionaire thanks to Facebook investment
Big Brother really is watching --Irish tourist nabbed by US Government due to algorithm
"He's a great actor and women loved him in 'Shame'. It might have something to do with him having his todger out for most of the movie."
Michael's co-star Keira has previously revealed the pair got through the more uncomfortable scenes in the film - which include Michael spanking her - by turning to alcohol.
Keira said: "We only had one or two shots maximum. It was a vodka shot to calm our nerves and away you go really. Then we had champagne. We drank quite a lot of champagne actually. You can count on Michael to buy a bottle of champagne when one is required. The vodka and champagne is a good combination."