Was it funny of me?

One day when I was in the town with my grandpa in the market I saw some dirty black pigs. The pigs were making some sound from their mouth. It was in 2008 when I was 7 yrs old. I felt the pig was cute. I asked my grandpa whether I can kiss the pig or not. He said yeah go kiss it and let it bite ur lips and all the dirt go inside ur mouth.