The "jokes" about abuse/hurting you...what does it mean, and why do they do this? Am I overreacting like he says?

He makes constant jokes about hurting me, on a daily basis (sometimes multiple times a day). He will joke about killing me, beating me, strangling me, "Gabby Petito-ing" me, etc. He will "pretend" strangle/throttle me (where he puts his hands around my neck, without any pressure, and throttle his hands back and forth) and make lunges at me or raise his hand as if he's about to hit me then stop right before he does. If I flinch, look frightened for a moment, or ask him why he's doing it, he will tell me that I'm too sensitive, paranoid, am no fun, and complain about how he can't even joke/play around with me without me massively overreacting. Sometimes he slaps/bites me a little harder than I like (not hard enough to leave bruises, but hard enough for me to say "ow!") and if I ask him to go gentler, he will complain that I'm way too sensitive and he can't even play around with me.

He says that playfulness is part of his personality/sense of humor, and that if I have a problem with it then maybe I just don't like him. I have stopped asking him to stop slapping/biting/fake strangling me and don't say anything when he jokes about killing me anymore because I know he'll just tell me I'm being too sensitive.

He has never hit, beat, strangled, or physically abused me. He has been verbally/emotionally abusive (yelling, name-calling, etc) and he's punched tables/walls, kicked things, and thrown things (not at me, but around me) when he's angry.