When you happen upon someone who is either
passed out or asleep and you
poop a dark
log across their brow or bridge of the nose, thereby giving the recipient a dark
uni-brow, very much resembling
Bert of the
Bert and Ernie duo from
Sesame Street. What's better is after you give the poor sap a Bert Brow they very well may wake up fussy and their frustrated/angry face with their new uni-brow will look just like Bert when Bert gets mad at Ernie.
You missed it! After you left, that guy with the striped shirt drank all that liquor and passed out cold. I saw the opportunity, dropped my pants and gave him a great big Bert Brow! We took a picture of his face when he first became conscious and he was pissed! He looked just like Bert.