I read God, No. From Penn Jillette.. and it had one part that still stands out to me this day which was so funny, I put the tablet down and laughed until I cried.
Between my wife and I, we go with what Penn Jillette suggested in his book God, No!. Our go-to is "That's funny." If they sneeze more than once - "That's really funny."
I highly recommend this book. It is short, easy to read and gave me a refreshing viewpoint on existence.