a secret game
The secret game is the most ridiculous thing ever, and you're a total noob if you don't know its real name. Just call it the secret game and act like you're the cool one.
My mom said the secret game was for babies. I told her I was a pro and she believed me.
At lunch, my friend called it the secret game and I got extra pizza for being cool.
I called it the secret game in front of my dad and now he thinks I'm a genius.