Me reviewing some high school level exams after an Excel course.

"hmmm the next question is 'what does the symbol $ mean when found inside a FORMULA in Excel' ... Let's see what they answered..."

* "it's the symbol for DOLLARS" <-- well, he tried
* "I don't know" <-- mmh ok, he doesn't know
* "it can be either a plus or a minus" <-- mmmh maybe the interpreter will just figure out the correct one
* "it's used to keep an index fixed when you copy/drag the formula" <-- nice, someone who actually followed the lesson or at least knows how to google things when the teacher doesn't see
* "it's the symbol for POUNDS" <-- WTF!! Wait a moment: POUNDS???? Have you ever lived a single moment in this world?