Sascha Baron Cohen is the bravest man alive. I'm talking testicles of STEEL. I just saw BrĂ¼no...which is funny and I enjoyed it. But shiiiiiit... He's still alive after that? That's gotta deserve some respect.
Terminators -- most models -- have nards of steel or of a steel-titanium alloy, except they serve a fastening function and are subsequently "nuts." Naturally. And in every sense.
If one says "testicles," then it can come across a touch clinical, suggesting that the speaker may not have recently rolled a pair o' dice. Nonetheless, if you say "testicles" with the right inflection (as you surely did), and a raised eyebrow (well?), then comic irony takes the day.
On the other hand, if one says "testicles" and "steel" in conjunction, it evokes the image of prosthetics implanted to maintain appearances subsequent to an embarrassing and blindingly painful mishap that you don't ever talk about on first dates. Not a good ice breaker. But it's lots of fun at the airport metal detector when they start waving the wand. "No officer, it's not a weapon in the conventional sense. You see, I have testicles of steel. And x-ray vision. Here, I'll show you...my doctor's note." (Actually, I'm not sure what material is used in these applications, but I won't be caught dead googling it.)
"Brass balls" is a common, universally accepted term. Nice plosives there with eau de steampunk. And the suggestion of a brass monkeys associates onward to Steve Martin's term coined in Shop Girl, "chimpanzee penis." But that's one association too far. Not that most dudes hesitate to associate anything and everything with their junk in one way or another. This talent is hard-coded in the DNA and comes naturally.
Mmm... I'm not sure that I'm really a masochist. No one's ever punched me after I've been running my mouth, so I can't say for certain whether I'd enjoy it. It's just something I figured someone would do.
I haven't seen too many feminist rallies here in merry old England, but I'll keep my eyes open and give it the old college try, should I run across one.
Or just go into a pub dedicated to an opposing team. I like that idea. Though I think that it would result in more than just a single blow to the nugget.