The adjective form of testicle is testicular. The phrase should be "testicular fortitude".
I just met a guy who can't tell the difference between a noun and an adjective. It takes a lot of testicular fortitude to display your ignorance in public like that.
by My dixie wrecked November 26, 2003
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means having balls, bravery, courage
if ya wanna win, u bettah reach down and grab for sum testicle fortitude
by Inflame November 24, 2003
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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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Fortitude Valley (The Valley), a suburb directly north-east of Brisbane CBD known for it's clubs, music, drugs and alcohol, violence, homeless, gay clubs and adult entertainment, The Valley is also directly next to New Farm which has the largest homosexual population in Brisbane.

Most youths profer The Valley to The City to go out on weekends with more clubs and resturants and a much more chilled out laid back drugy vibe, The Valley also attracts lots of freaks, drug users/criminals, raging homosexuals and homeless, but there is a strong police presence and lots of people so it is generally safe.
Person 1: "I hate clubbing in the city its full of drunk cunts"

Person 2: "yeah lets go to the valley (Fortitude Valley) and pop pills!"

by dayvidrx August 12, 2008
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The act of letting them hang and not caring what others think. Attacking the task at hand without holding back or giving in
“Hey Weston how do I increase my Testicular Fortitude” Weston-“ITS BETWEEN THE FRICKIN EARS”
by Senor Anderson January 6, 2022
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The state of being unusually courageous in a corporate environment that causes an individual to utter wildly inappropriate comments, especially when taken out of context. Most often occurs to a Golden Boy.
Golden Boy, in the middle of a meeting: It smells like SEX in here!

Others: Wow, that took some hessticular fortitude to say that in front of the boss.
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