The 44-year-old actor attended the World Meeting of Families in Philadelphia on Saturday (26.09.15) and revealed the leader of the Catholic Church is a fan of the comedy movie.
After 14-year-old soloist Bobby Hill performed at the event, Mark took to the podium and said: ''That was truly the voice of an angel. But then he whispered in my ear that he loved the movie 'Ted'. And I told him that was not appropriate for a boy of his age.
''Holy Father please forgive me. I've always hoped that the good Lord has a sense of humour when it comes and pertains to many of the movies that I've made.''
The Hollywood star - who has sons Michael, nine, and Brendan, seven, and daughters Ella, 12, and Grace, five, with wife Rhea Durham - has previously revealed his faith to be a major part of his life.
Mark - who last year appeared in 'The Gambler' - said: ''Being a Catholic is the most important aspect of my life.''