Very cute, I like the twist at the end.
(The little girl sounds a bit like me)

Wonderful! I love the twist at the end.

With this in "humor" genre I should ahve expected that ending... but didn't, so I giggled. Really, it seems all serious in the middle with the mother's musings and telling her daughter how hard it would be to be Mary-Jane... and then the daughter just drops a bomb-shell.

"I'm Spider-Man." indeed.

Good poem.

Aw. This is such a lovable poem. I loved it, loved it, loved it! Great job.