by the way
Can be used as a side remark or something of the sort. This phrase is most often used as a sarcastic remark to make a point or hurt someone.
(you and your friend after a text fight) friend: Oh by the way, I heard haley say that she is planning to ask your bf out tomorrow. she said that he was insane to date you and deserves much better. you: (cries in a corner and doesn’t come to school for two weeks. at this your bf has cheated on, text dumped, bragged to, etc. you. your friend succeeded in ruining your life starting with these three words)
By NoSleepTilBrooke