A Unique Experience - Is it a ghost?

Two months ago, I went to Surabaya Night Carnival with my friends. We enjoyed every ride there and we went back home late at night. My friend drove his car and two of my friends were in the back seat. On the way to drive them to their house, one of my friends started to tell a story about a ghost that usually goes around her house. The story went on and we talked about ghost thing till we arrived at her house. After my friend said goodbye to me, I went straight away to come back home. On the way to my house, we still remembered about what the other two friends of us told us about.
After a few minutes, we drove silently, we arrived at a traffic light and we had to stop there. It was really dark and it was not many people are there because it was around ten pm. After a while, I started to hear some noise. It sounds like someone was bouncing at the back seat like "kik..kik..kik.". I thought that it was a ghost or it was a problem with that car. If It is a ghost, I would be scared, and on the other hand, if the car broke down, I would be waiting untill someone came and fixed it then my brother would nag at me because Iwas not arrive at home. I stared at my friend and he stared back to me. The sounds became more clear and loud, and that time it was from my left side. We looked at the left and we found something that really bothered us at the moment. It was a truck of ducks.. For God sake. It was a truck of ducks.. The ducks were so loud. After we found out what happened we just laughed so hard. It was really funny and I still laugh when I remembered this. After that incident we chatted and laughed untill I arrived at my house. It was a unique experience of mine that I want to share with you guys. Thank you.