Dp is ALWAYS going on about my weight saying I dont eat enough and am too thin. I know this isnt true so ignore him. Last night we were in bed messing around, he was on top of me and all of a sudden turned all serious and asked what I'd eating during the day. I laughed and reeled off my full days menu (including meals, biscuits, cakes etc!) and he said "don't lie. You're getting even thinner, you can see all your bones in your chest, it's gross". 
I pointed out to him that it's normal to be able to see chest bones and he was being silly. He argued with me saying I was obviously too thin and he wasn't going to put up with it
I tried to push him off me as he was starting to piss me off and he pinned me down and shouted at me that he wasn't going to stand by and watch me starve and if he had to he'd "ram food down my fucking throat." He then got off me but he hurt me arms and shoulders in the process. I'm so angry at him because he's talking absolute shit and it's really starting to get tiresome.
How the hell do I make him realise that I'm an adult and don't need him parenting me??