I've seen several photographers who have examples of "trash the dress" shoots, but I can't quite figure out what this is. When I first heard the term, I pictured a bride after her wedding, smushing her dress into an oil drum, pouring on gasoline and lighting it on fire! But when I look at the photos, they just look like more photos of the bride (and sometimes the groom) hanging out and enjoying each other. So why is it called a "TTD"? When does it happen, and why is it done?