So, where did Jiminssi come from? Well, according to BTS fans, it's a play on Jimin's actual name, with a cute and affectionate suffix added to the end. It's basically Jungkook's way of saying "hey, Jimin is my buddy, and I'm going to give him a special nickname to prove it". And honestly, it's pretty adorable.
What's even more interesting is that Jiminssi isn't just a one-off thing - Jungkook has been using it to refer to Jimin for years now. It's become a sort of inside joke between the two of them, and it always gets a laugh from fans. Whether they're performing on stage or just hanging out behind the scenes, Jiminssi is always a guaranteed crowd-pleaser.
