Partyhat Firemaking is an animation override unlocked after completing all of the RuneScape Road Trip tasks in May 2014 and 2015.
This animation is used as an override to show the player throwing a partyhat on a fire rather than the logs they are adding. It was first used during 2014 April Fools replacing the standard log animation. Partyhats are thrown onto the fire in alphabetical order (blue, green, purple, red, white, yellow).