a kevin brown nose - When your butt is on someone's face and their nose is in you

When your butt is on someone's face and their nose is in your crack and it smells like a dumpster

I did a kevin brown nose on my brother and he ran out of the room screaming

My mom sat on my face and her nose was in my crack and it smelled like old socks

At the gym, I did a kevin brown nose on my workout buddy and he threw up