What it lacks in sexiness it makes up for in being a dog in underwear.
Commenters were quick to point out the excellent technique, "The head turn, the back bend... Definitely not this dog's first underwear pic pose." And hopefully not the last.
Ideally, this will start a trend in which society forever forgets sexts in favor silly dogs in clothes. Dogs in clothes are much more important to your mental health than sexts. They're proven, in fact, to make you feel great. Science.