Faceback
When you're scrolling through Facebook on your phone and accidentally tap the back button, making you start all over again. It’s like when you're eating a sandwich and you drop it on the floor.
I was reading a funny post and tapped back, and now I have to scroll all the way back up.
I was halfway through a post and tapped back by accident.
I was about to finish my Facebook feed and hit back and had to start from the top.