A concept, idea, project, etc. that is so confusing, it leads the habitual
pencil biter to
skip biting the unfortunate number two, and go
straight to eating it.
"Hey, y'know this question's a real pencil-eater, it's been stumping me for weeks!"
"This project's such a pencil-eater, you mean to tell me I need how many sources for it? I can't even find
one! Who wrote this textbook anyway?!"
"
Man, adobe choosing to
trick its customers into a year long subscription sure is a real pencil-eater! It's like they wanted a lawsuit or something!"