testicle fortitude
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.
testicle fortitude
means having balls, bravery, courage
if ya wanna win, u bettah reach down and grab for sum testicle fortitude