all kidding aside vs no really

all kidding aside

adv

  • Used to attempt to make a serious point in a jocular conversation. 

no really

adv

  • really; seriously; used to attempt to introduce a serious point in a less serious conversation 

intj

  • no kidding!; is that so? (sometimes used sarcastically in response to the obvious) 

How often have the words all kidding aside and no really occurred in a corpus of books? (source: Google Ngram Viewer )