22-year-old William Jenkins of Palmetto, Florida has just made his way to the top of our list as the world's worst son.

On Tuesday night, William was home with his 53-year-old mother.  He asked her to give him a shot of vodka. She said no.

So William went out into the backyard, picked up some of their dog's poop - bare-handed - then went inside and rubbed it in his mother's face and pushed her to the floor.

Well that's a pretty Sh--ty thing to do.

Jenkins admitted to rubbing the dog poop in his own mother's face, but denied pushing her to the floor. He was arrested for felony domestic battery.