How to explain something weird to a friend

I need help ╥﹏╥. So um there is a joke I have with a couple people I know, and it's about a dick cult : It was a total joke and we weren't serious about it at all. I didnt think anyone would take it seriously until another friend of mine texted me asking what I was laughing at in class, and I explained what it was to them....Then later in a discord server I'm in with them they proceeded to call me disturbing and disgusting. I know it sounds stupid but I dont know what to do