Clint Bushbaum, sophomore in exercise and sport science, right, has adult-film actress Syren sign a photograph at the Pleasure Palace, 117 Kellogg Ave., while adult-film actor Ron Jeremy gives his autograph to a loyal fan. The two porn stars signed autographs from 6 p.m. to 10 p.m. Wednesday at the adult gift and book store. ISU students and Ames residents lined up outside the store, sometimes waiting up to an hour, to meet the adult-film stars.