User blog comment:Red Canary/Favorite Character Quote/@comment-4823177-20120403014047/@comment-1038387-20120406124224

Yeah, it's a pretty common term originated by loggers. It's kinda like saying "Fire in the hole" for explosions like miners used to do.

To be honest, I didn't really like that line. I associate the phrase "Timber!" with, well, the exclamation mark. It's something you're supposed to yell.