We don't know about you, but we can't say we haven't been guilty of that classic childhood breakfast sin: hiding out under the dining room table while stuffing our faces with Lucky Charms -- but only the magically delicious marshmallows.

It seems General Mills and Lucky Charms are embracing our indulgences by introducing boxes of marshmallows-only cereal. Unfortunately, there are only ten of them.

The brand has announced a contest through which ten sweet-toothed consumers can win the boxes by posting images of themselves on social media holding an imaginary version of what it calls the "unicorn" of the cereal world, along with the hashtag #Lucky10Sweepstakes. To promote the contest, the company, via its agency Saatchi & Saatchi New York, has created this fun video starring old school hip hop star Biz Markie singing a Lucky Charms-themed cover of his classic track, "Just a Friend."

More details can be found on the General Mills blog. The contest ends on Oct.18.