I would do almost nothing, I would impersonate Wal-Mart in some way and announce a 69% discount on everything for the next 5 hours only, on as many social media as I can (if I was feeling less lazy I would also post a picture of some supposed mega-deal I would just have snatched myself), and then I would pour myself a cup of tea, sit somewhere and watch the large crowd that would already be gathering around the mall do its braindead-crowd thing when there are huge promotions to be had and a very limited availability.
Nasty, indeed ;)
Edit (I forgot the most important!): Hi and welcome ;)