WEST CHESTER, Pa.—A tow truck driver accused of drugging and sexually assaulting several men testified last week that he had sex or other intimate encounters with his accusers, but he said the activities were consensual and denied having drugged them.

Mark Ethan McFall is accused of giving out medication and then molesting the unconscious or groggy men, often recording his acts. He is charged with rape, involuntary deviate sexual intercourse, sexual assault, unauthorized administration of an intoxicant and related counts.

McFall, 43, a former South Coatesville police officer, told jurors that he is bisexual. He described trysts with one of his accusers and said he took part in an erotic Christmas card photo shoot with another. But he said the activities were consensual and none involved slipping the accusers medications to render them unconscious.