Finn was giving invitations to Shrimpo, Goob, Scraps, Gigi, and other toons, he was really excited and the others to

Goob: "Oh! Thanks Finn.."

Gigi: "…Y-Ya I’ll be there.."

Scraps: "….I’ll get you another fish..?"

Shrimpo: "BIRTHDAY’S ARE STUPID!"

Finn knew Shrimpo would say something like that. He sighs and goes to his house, he cleans the house and decorates, he put the cake up but hours later, no one came (You can be Finn, Shrimpo, Gigi, Goob, Scraps or your oc)