Everyone knows someone who scours a load of Lucky Charms cereal for just the marshmallows. Maybe that someone is you. Well, marshmallow lovers rejoice. Lucky Charms has announced they'll release boxes with only the signature colored sweets.

But there will only be 10 boxes.

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In an effort to cater to requests of marshmallow-crazed fans, General Mills launched the sweepstakes Wednesday and the contest will run until Sunday, Oct. 18.

To win a box of Marshmallow Only Lucky Charms, contestants must snap a photo of themselves holding an imaginary box of Lucky Charms and post the picture on Facebook, Twitter or Instagram with #Lucky10Sweepstakes.

To help inspire creativity, the "unicorn of the cereal world" has teamed up with rapper Biz Markie.

In a remastered version of "Just a Friend," Markie sings this hook:

"Oh baby you want marshmallow only, but you see there's only ten, with the hashtag lucky 10, just strike a pose, and send us your selfie, with an imaginary box, and you could win a box."