For your chance at a box of Lucky Charms Marshmallow Only, you'll need to share a photo of yourself holding an imaginary box of Lucky Charms on Facebook, Twitter, or Instagram through October 18th using the hashtag #Lucky10Sweepstakes.
You can enter up to three times, once per social media site. Potential winners will be notified on or around October 20, 2015. You must be at least 18 to enter and a legal resident of the U.S. You can find the rules and fine print for the contest on the Lucky Charms Facebook page.
To help promote the sweepstakes, the brand tapped rapper Biz Markie to hilariously sing to you about the all-marshmallows Lucky Charms and how you can win a box using the tune of his 1989 hit single "Just a Friend." Here's the video:
And, in case you wanted to compare, here's the original: