Happy Horn is a Sparrow Mod in Destiny 2.
What it does
Honk! Press [###DestinyNamedSubstitutions.ui_player_action_vehicle_honk_button###] to honk your vehicle's equipped horn.
More Sparrow Mods
Air ControlSparrow Mod
Bellow HornSparrow Mod
Bike HornSparrow Mod
Chime HornSparrow Mod
Dawning DareSparrow Mod
DestabilizersSparrow Mod
Dramatic HornSparrow Mod
Duck HornSparrow Mod
Electric HornSparrow Mod
Frame HornSparrow Mod
Jingle HornSparrow Mod
Noisy HornSparrow Mod
Odyssey HornSparrow Mod
Stealth RunningSparrow Mod
Vernier ThrustersSparrow Mod