' by the by' 'by the way' which is correct?

Answer:
These phrases are not correct or incorrect, they're expressions. Which you use would depend on what the people around you use. Someone I used to work with would often say, "by the by and by".
First answer by Notyouraveragedummy. Last edit by Notyouraveragedummy. Contributor trust: 387 [recommend contributor recommended]. Question popularity: 1 [recommend question].