privacy.

So my moms nosy "husband" likes to go through my things and open my packages without asking me and I ordered a Dildo and it was delivered to my house and he opened it and then left jt on the counter... I'm afraid he's gonna tell my mom. I'm not scared that shes gonna know I masturbate but thats just like really embarassing to me?? idk am I the only one who thinks people (their parents at least) know they masturbate?