Here's the definition of swag according to dictionary.com.
1. A suspended wreath, garland, drapery, or the like, fastened up at or near each end and hanging down in the middle; festoon. 2. A wreath, spray, or cluster of foliage, flowers, or fruit. 3. A festoon, especially one very heavy toward the center. 4. A swale. 5. A swaying or lurching movement.
Whatever you think swag means, it's probably wrong.