I'm too busy tweaking on tweak
"Does that help, smartass?
I kind of failed math, though."

yes, it's good to know I was right about most of the usages. What about the kind of hypen usage like... John gave me three crayons -- red blue and green -- so I colored a picture of a trick. Is that the proper usage? More or less, I couldn't think of a Good example-- Candy is good for the brain they say.