Former "Two and a Half Men" star, Charlie Sheen, has called his ex-wife Denise Richards a "terrorist" and the "worst" mother alive. The 49-year-old actor who has two kids, Sam, 11, and Lola Rose, 10, with the actress, posted a series of now-deleted tweets against her, said the Hollywood Reporter. The "Anger Management" star wrote a long "open letter to the media" where he bashed Richards by calling her the "worst mom alive" and an "evil terrorist." [related-post] The "Valentine" actress, however, took to Twitter and wished Sheen a happy Father's Day. "Happy Dad's Day! @charliesheen have a great trip in Mexico! Kids were disappointed u weren't here for it- Hey we'll celebrate when u r back!." Happy Dad's Day! @charliesheen have a great trip in Mexico! Kids were disappointed u weren't here for it- Hey we'll celebrate when u r back! — Denise Richards (@DENISE_RICHARDS) June 21, 2015 Sheen was married to "The World Is Not Enough" Bond girl from 2002 to 2006.