Because, yes, we do.
Wonder Woman your way out of the conversation.
*laughs*
*flies away to save the world*
File your nails.
Make sure they're sharp. The fabric of well-intentioned ignorance won't just tear itself, you know.
Ask the right questions.
Other options include:
"Excuse me?"
"You're joking, right?"
"Why, exactly?"
USA
Know that sometimes all you can say is "wow."
What else is there to say?