So's your old man phrase informal
This expression means "same to you." It is often used as a childish, petty response to an insult.
A: "Why did you lose the key again? You are so stupid!" B "Well, so's your old man!"
A: "Look what you've done. You’re such a scuzzbag!" B: "So's your old man!"
To stop acting or living in a manner that is not realistic due to having experienced a very exciting time
Soon, she brought him back to earth.