I was kidding - This is like an old-timey way of saying 'just kidding.' It's

This is like an old-timey way of saying 'just kidding.' It's like a fancy version of 'jk d00000d.'

You said 'I was kidding' like it was from a Shakespeare play.

You said 'I was kidding' like you were in a fancy movie.

You said 'I was kidding' like you were a knight from a medieval story.