Special occasion phone

Finn's Special Occasion Phone is a telephone that people call to tell Finn about a special occasion. The ringtone is a dull voice repeating "Special occasion." It first appears in "Jake Suit," in which Flame Princess calls it to invite Finn over to meet her family.

Appearance
The green line on the screen wavers with the ringtone. On the back is some sort of caller ID which lets Finn knows who is calling before answering.