When someone sits on someones face while they are sleeping, so that the nose goes up the anus.
I gave you a brown nose in your sleep.
by Matt Nederbo December 11, 2006
The brown nose is when your in the 69 position u sit up and u have to shit.its half out and half in and you sit on ur parenters nose
Your mom got the brown nose by me!
by Little.Boom July 14, 2006
An bi effect of lickin pussy and gettin shit on your nose
You get a brown-nose from Brown-nosing-
by YARR, ME ARE TEH PIRATE February 06, 2003