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. 

(Daily Dot(Here are a few samples.  WARNING:  They're probably not-safe-for-work.)