I think this is the first social media challenge that's trying to be sexy but really just channels all the discomfort of a mammogram.
There's a new trend where women . . . and voluptuous men . . . are squeezing their boob into the shape of a heart. It started in China but it's going viral worldwide now.
You form a heart shape with your hands, then kinda jam your boob through. I guess you need a friend to take the photo, or set the timer and put your phone on a tripod.
And if you're thinking, "Oh, maybe they're doing this to raise awareness for breast cancer" or something like that . . . nope. It's just boob squishing for boob squishing's sake.