f(x_x)f - A face that looks like a zombie with hands. The f's are like

A face that looks like a zombie with hands. The f's are like clawing at your face.

I saw f(x_x)f in my DMs and it gave me the creeps.

He texted me f(x_x)f after I called him a meathead.

My friend used f(x_x)f in a tweet and it went viral because it was so gross.