Troy Mercanti trial hears of orgy, drugs, abuse of Tammy Kingdon ACCUSED: Troy Mercanti, a former member of the Coffin Cheaters and now a Fink bikie gang, is accused of repeated abuse of his partner. VICTIM: Tammy Kingdon, the long-time partner of Troy Mercanti, a former member of the Coffin Cheaters and now a Fink bikie gang. TAMMY Kingdon seemingly would have done anything for the father of her children - senior Perth bikie Troy Mercanti. She even participated in orgies and tolerated years of abuse, including one Christmas day punch that knocked out one of her teeth, Perth's District Court has heard. Mercanti, 45, is on trial facing five charges, including grievous bodily harm and assault against Ms Kingdon. The 36-year-old woman wiped away tears as she told the court how she continued to go back to him for the sake of their two sons. When Mercanti was in jail for 16 months, she visited him twice a week and called him every day, she said. When he was released in December 2006, he was uncontactable for about five days before returning home for Christmas. Ms Kingdon said Mercanti ``seemed okay" but appeared to be lacking sleep and had the smell of alcohol on him, so she asked where he had been. ``He was acting quite sweet and then he closed the bedroom door," she said. ``He pretended to be all nice ... then he just started pounding into me. Mercanti struck Ms Kingdon to the sides of her head and body, and kicked her legs and side of her breast when she was on the floor, she said. After the initial attack, Ms Kingdon went to the bathroom but he followed her and struck her several more times, she said. The entire assault lasted about 10 minutes and Ms Kingdon said she knew she had to get out of the house. ``I felt like I'd been hit by a truck," she said. Later, at a family gathering, Mercanti was ``parading around" and intimidating her by pointing his finger and giving her a sly smile like he was ``going to get" her. She said he later ``king hit" her in the face, knocking out one tooth and leaving two others loose. ``I was just in shock ... I was freaking out," she said. Mercanti's brother took Ms Kingdon to the hospital, where she had told the doctor she fell down some stairs because that was the lie they told the children. Mercanti was jailed again in December 2008 and when he was released they took a family trip to Queensland that was ``amazing. ``It was the best the relationship had ever been," Ms Kingdon said. She said shortly after, the couple discussed allowing other people into their sexual lives because she wanted to keep him happy. She said they attempted a foursome with another couple in a spa but she was not ready so she watched him with another woman instead, which left her feeling hurt. At another party she said a group that included that same couple and two other women took some drugs and participated in a ``sex session. Mercanti's defence lawyer has argued the couple were addicted to sex and ``keen as mustard" for threesomes.