After any group or groups of persons, gay or straight, engage in anal
intercourse, the man who's penis has been inside the other person's rectum, uses his now fecal covered penis to draw a picture, using the person's
fecal matter, on his or her back. Sort of like a poopy game of Pictionary. The draw-ee, as it were, tries to
guess what the draw-er is drawing.
"So
check this out Bro, Josh and I were Brown Backing last night and he drew the logo for the Chiefs on my back! I totally got it before he was even finished!
Brownbacking Kansas Governor Sam Brownback
brown brown backing brownback