1. They both wanted the pink bowl.
  2. One of them insisted the mermaid was a dolphin, while the other one was determined to correctly identify it as a mermaid.
  3. They couldn't agree on which of them has more boogers.
  4. One of them scribbled on the other one's artwork.
  5. They both wanted the same book.
  6. One of them tickled the other one.
  7. One of them went potty without telling the other one, who wanted to sit on the little potty next to her.
  8. They both simultaneously wanted to jump in the same square inch of trampoline.