I mean literally BROKE it.
I was copying a page out a book (and of course, it wasn't work-related) and I pushed down a little bit on the lid to flatten the pages. I hear a small *crack*...the sort of crack that glass makes. I opened the lid, and sure enough, the glass on the copier was broken.
I immediately told the office manager. She said that it is a minor fix (probably about $10), and that she will report it "anonymously", but I still feel like a damn fool.