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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
 
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