Balls, as in courage or bravery. See also chutzpah.
He doesn't have the testicular fortitude to challenge me to a fight!
by JohnQPublic March 25, 2007
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Courage; a term coined by WWE wrestler Mankind, from the term "balls" commonly used everywhere.
You don't have to testicular fortitude to hit me with that steel chair!
by Julio Christ June 11, 2006
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n. Balls; Ballsy.
More commonly used in its abbreviated form, tf.
by EskimoBobGuy June 10, 2004
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A more academic English translation of the Spanish word "cojones", that originally stood for testicles, two spheric glands part of the reproductive system of males, also commonly known as balls.

To have testicular fortitude is to show strength, courage and sagacity in challenging situations. The story of how strength and courage is related to two nuts encased in shriveled skin hanging from between a man’s legs is a fascinating story that i don't have the time to go into right now.
You can’t win with reserve and lassitude
And you can’t face the unforgiving multitude
Without the manly trait of testicular fortitude
by MikeSoussan May 2, 2008
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That took testicular fortitude to stand up to you boss like that!

What a woosy, he has no testicular fortitude.
by Ostee September 1, 2010
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