Never mind how basic their initial words may be, getting to hear your tot's first is pretty momentous for any parent. 。

For Michael McAvoy, the first word from his daughter sent him "over-the-moon," according to his tweet on Wednesday.。

And for the self-confessed geek, there's nothing more heartwarming than having your kids take after your passion.。

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SEE ALSO:Ice cream-stealing baby won't let grandma get a taste。

What was the word?

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That's right -- "Batman."。

We bet McAvoy put a bit of work into getting his daughter to say "Batman" in time to the show's iconic theme tune.。

And the payoff was totally worth it.。

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