Conan O'Brien Teaches Kirstie Alley a Lesson About Dissing People Over Twitter 23.87K Whitney Jefferson 11/20/09 11:11AM Filed to: TV TV Latenight Feuds Video Top Gawker Twitter wars: No good can ever come from them. Last week Kirstie Alley trashed Conan O'Brien and he fired back over the course of this week. His best jokes, after the jump.The offensive tweet in question:[via Radar]