1 definition by MrBigDef

Top Definition
Originating from the Gangstarr song "Moment of Truth" a Dennehy moment is a point in time when you or your associates realize the girl you hooked up with is grotesque/ugly.
When I remembered that Rosie O'Donnell gave me a handjob last night, I knew it would be a Dennehy moment for the rest of my life.
After I heard Ian McCulloch, the famous DJ, hooed up with Amy Poehler at Lindsay Lohan's condo, I knew it would be a Dennehy moment for the rest of his life.
by MrBigDef March 30, 2009

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug