"Good to Know" comes in handy sometimes.

My DH says " Seriously " Come on NOW.

I usually say "wow" or "well......".

When I was up north a couple summers ago, I went to pick up me DGDs. One of their friends got really nasty with their (my DGDs' gma) and said "Whatever, old lady!" I came unglued. Oldest DGD asked if we could take the "friend" home. I said gladly because she wasn't about to spend the rest of the day with us. They thought after shopping. I stated not after the way she spoke to your Gma. Told them if I wouldn't have to worry about going to jail, I would show her what happens when one shows disrespect to an older person in their own home. The girl looked at me and asked me to wait a minute, ran into the house and apologized to their other gma. I still took her home first.

I see! of course! right right!

I try to avoid using "Right!" when I do not agree with the other person's statement.

My Mom used to always say " Well for Heavens sake" I say it some too but not like she used to

I am impressed

then there's the old country saying (or maybe it is a New England saying) - "Well, I swan..."

Never could figure out where that came from.

I agree with Lynnie, "whatever" is most insulting and it sticks in my craw. I do like the response, "quite".