Fart Cake. A funny backhanded way of calling someone a piece of shit.
Dude #1; Dude, did that guy just cut in line in front of you?
Dude #2; Yup, what a fart cake!
A clickable icon nestled between like buttons indicating a neutral stance on a viewed item.
Dude, that Grumpy Cat meme is clever, but whatever. I wish there was a meh button.