"Back east" from people who aren't from east of 'here' or don't regularly go there.
"Well, there you go" ...the worst being back in the day when I had a Chiefs jacket, someone complimented it and I said something like 'if only the team made it worth wearing' and they responded "well, there you go" .....wuh?
And several other stupid phrases people say without realizing what they're saying, like "I could care less..."