Everyone needs to walk around with a few lollipops in their pocket.
When Karen comes along, hand him/her one as a solution to whatever problem they have.
Can't bitch and moan while sucking on a delicious candy.
>"Whoa, whoa, whoa, whoa."
>"Let me get this straight."
<They stop talking to let you cosign them
>Hand them a lollipop
>"Put it in your mouth and your problems will go away"
>About face and walk away