Lighten up, Francis.
It’s an old Bill Cosby comedy line, from back when he was still funny.
Lighten up Francis...
No, people with a sense of humor would say it. You should try to purchase a sense of humor somewhere before it’s too late.
My Dad would say that, along with, “Why don’t you go play in the street?” Or “Go tell your mother she wants you.”
We knew he was joking because he never gave us reason to question his love, but we also respected him when he was not joking, and loved him in return for his humor but also for his assertive use of authority, which we feared when young but used as a defense against peer pressure by the time we reached our teens- and learned to love him for that, too. He’s the best Dad any child could ever ask for.... and unlike tis guy, he only let us have guns because he knew we respected both him and the weapons.