My favorite "feature" of the pre processor is when I include Windows.h and then get a super strange compile error in my code because a macro Windows defines (wi

My favorite "feature" of the pre processor is when I include Windows.h and then get a super strange compile error in my code because a macro Windows defines (with a super generic name) matches part of a name in my code (which is in a namespace btw) and expands into some unholy thing that is invisible at the source level... Fun times.