If One Direction had you swooning with their hit 'What Makes You Beautiful,' you need to check out the teaser for their upcoming 'Sesame Street' parody, 'What Makes U Useful.'

All five of them sing to the letter "U."

Don't worry, you can still pretend they're singing to you (and not "U") if you want -- we won't judge.

As we previously reported, the boys are set to appear on the 45th season of the kids television show as themselves, and now we have footage!

We cannot wait to check out the full video, which sadly won't be released until this fall. We know, it's so far away.

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