“Yeah, no kidding.”
You're eating out at a new restaurant with a friend. After looking at the menu, your friend comments that the food is really expensive. You were thinking the same thing, so you agree.
Yeah, no kidding.
"Yeah" is a more casual way of saying "yes".
Say this to agree with something that a person said:
You can also say "yeah" when you're going to disagree but you want to make your disagreement sound a little softer.
"Yeah" sounds less formal than "yes."
"No kidding" means "That is true" or "I agree":
A: There's something seriously wrong with her.
B: No kidding.
You can also ask "No kidding?" which means "Really?":
A: I'm moving to Amsterdam.
B: Really! No kidding?
A: Yeah, it's true. I'm moving at the end of September.
"No kidding" is a casual phrase that you can use with friends, family, coworkers, or even people who you've just met.