My father always enjoyed silly humor and Ray Stevens' songs were in that category. I still enjoy getting a good laugh from Ray Stevens. I recently learned of a song by him called "I'm My Own Grandpa". I link to one video of it in the title here, but you can go to youtube.com and search for it. A lot of different videos will come up featuring that song.
Give it a listen and try to sort out the relationships. It's silly and fun.
If you do not know who Ray Stevens is and you enjoy silly humor you are in for a treat. There are lots of other videos up of his as well. I enjoy listening to them as well.