Final answer:
The humorous aspect of Rose's origami figures is that they were likely messy and unrecognizable, doubling back on themselves in a whimsical manner.
Step-by-step explanation:
The humor in the origami figures that Rose made likely lies in how they doubled back on themselves, which is an unexpected and playful twist to the traditional art of origami. Rather than being perfectly folded or elegantly crafted, Rose's origami figures were likely messy and unrecognizable, which is what made them funny. It suggests a playful attempt at origami that went humorously awry, demonstrating a charming imperfection in the creation of these figures.