look up any word, like ratchet:
 
1.
A person who does a lot of flapping about without doing anything constructive.

A limp sail in the breeze.

All bark, no bite.
Guy 1: Man, Jerome hides behind the loading dock and smokes bud all day long and then complains that I don't work.
Guy 2: What a cockflag.
by Satch45 July 18, 2010
 
2.
Either the whole sheet(s) or remnants of T.P. left dangling from one's manpole after wiping one's manjuice from oneself.
As my wife sat on the terlet post love-making, I proudly waved my cock flag in her face and declared my happiness.
by In honor of Ted V. September 01, 2007