Hair at the base
It means you're a man. If you got hair at the base, you're not some kid. You're a man. You're a beast. You're ready for anything.
My dad has hair at the base. He’s not a kid. He’s a man.
I saw a guy with hair at the base. He looked like a beast.
My brother says if you don’t have hair at the base, you’re not a man.