Only joking 

Similar to No offense. It's usually said by a person after they've insulted you and meant everything they said, but don't want to upset you or get punched in the face as a result.

Mike: "Dude your a fucking faggot and no ones likes you! ...Haha only joking :)"

John: -.-

Only joking by lolrakfj July 13, 2012

I'm only joking 

having a joke.

I'm only joking about going to heaven.

I'm only joking by Debskelly1985 March 7, 2023