This is my first post — hi everyone!
I think someone might have mentioned this, but I love when he makes acronyms out of things that don't need to be acronyms. Like, LB for lidblower.
The "why" is by far my favorite recurring Wursterism (followed by variations on "wait, what?). There's one Wurster "why?" that I would love to find again, but I have no memory of which character he was doing. He was explaining something in an agitated tone, and ended it with a really forceful, definitive 'why' — employed as a period, not as a question mark.
I know this is pretty damn vague, but if this rings a bell to anyone, please do tell.