Painting the walls
When you have the worst possible diarrhea, and it's like your guts are exploding all over the wall, making it look like a cum and poop painting.
My diarrhea was so bad, it looked like a cum wall and a poop mural all in one.
I had a diarrhea explosion, and now the wall is covered in cum and poop.
My guts were so full of cum and poop, I painted the wall like a messy artist.