Designing something for my dad

So, my mom's side of the family is mainly white Christians who r super judgemental and abusive. And since my mom is going no contact with them, I can design a tad bit. I and my dad are coming up with a somewhat passive-aggressive seasonal greetings post. I had already designed something for me and my mom to post (it said Merry Christmas from the *Last Name*). (For context some Christians have been making up a whole thing about the "war on Christmas") so my dad wants me to make a post (that'll piss off my mom's side of the family) saying "Happy Holidays, and seasons greetings, things we have said for hundreds of years". I am a bit anxious about it but I know it's gonna be really funny to see them lose their god damn minds XD. Mind you, I have nothing against any religions. Anyways Happy Holidays!! <3333