Greg: I'll explain the origin of 'Woodshed' to you - I actually misquoted it, I'll quote straight from Campbell's Autobigraphy (which is a great read BTW) - "If Chins Could Kill"
Bit of background - Campbell is on the set of Escape from LA with Kurt Russell:
Kurt: Hey Bruce, say "workshed."
Bruce: (incredulous) What?
Kurt: From Evil Dead II
Bruce: Yeah, I know that, but how do you know about that obscure line?
Kurt: My son is a big fan of that film. For some reason, he wanted me to have you say it.
"Kurt was too polite to mention that "workshed" was an obvious overdub to help audiences know where my character Ash was going next. If you watch the film, my mouth doesn't move at all during that line, and it's a point of great ridicule on college campuses across the country."
So there you have it. It probably pisses him off every time somebody says it thinking they're being smart.