An example of slung is when your backpack is carried on one shoulder.
She slung the bag over her shoulder.
He slung his arms open, giving her a huge target.
Her father returned with a bag slung over his shoulder.
She ripped the flower from her hair and slung it in the dust.
Mrs. Watson sipped tea and waited for her to finish before she motioned to the clothing slung over the back of the couch.