the act of defecating on a plane at 30,000 feet.
It was such a long flight I had to Brown Summit half way through.
by Fubar57 October 21, 2009
The act of spreading one's ass cheeks and placing the butt hole on another party's (willing or unwilling) nose.
That guy was hurting after brown summiting Steve Carrel.
by jibjab337 April 03, 2014