To all you pretty girls out there, if you don't know what Thumb Faces are then prepare to take a crash-course in how to go from pretty girls to ugly girls instantly just by changing the angle of your smartphone when you take a selfie. There's no trickery or optical illusions taking place (well, not quite) but more a matter of perspective.
It's kinda like those ads you see everywhere online for 'lose weight and look great in 6 weeks' with amazing before-and-after photos, except this time it's in reverse, and it's a growing trend among females and their friends on Facebook to challenge each other with whoever can come up with the most disgusting results.
In the world of selfies i'm guessing it takes a lot of courage for pretty girls reveal themselves to the world and their peers as ugly girls with a face that would look more at home on the end of their thumb, so it's very interesting in this image-conscious society would anyone want do it?
Maybe it's because thumb faces look like a whole lot of fun to do. So it's time not worry about how you look online and join the revolution. Who knows, maybe people like you for the beauty within and admire your exterior humor.