Clean the horn contacts(three on the front and one one the back side) and check the ground connection on the steeing wheel. Mine did the same thing when I tested the horn using the switch wire on the steering wheel to test my fix.
You probably have a short in your electrical system. Also the fuse may be burnt out on the horn.
Honk is the cry of a wild goose
What can honk without using a. Horn
Honk
A goose.
pulling a string
Europeans...
toot
A goose
push the center of the steering wheel. honk honk
a baby with a trumpet
You have to honk the horn