None of them can enter a room by opening a door, & walking through it.
Always gotta smash things: windows…doors…walls!
Wearing a cape obviously causes your fingers to go numb. Can’t work the doorknob…
The Hulk; rip his pants.
I wonder, can Superman kill himself? I mean, besides exposing himself to Kryptonite. He couldn’t hang himself, razors won’t slit his wrists…apparently he can even fly into the vacuum of space and be fine. Is he susceptible to drowning? I can’t think of any Superman power that would prevent him from drowning at the bottom of the ocean, but that seems too simple.
It reminds me of the thread asking whether Superman could rip his own head off.
Sure Superman can kill himself. All he needs to do is get up a good head of steam and head straight for a red sun. Somewhere along the way he will pass the threshold and his powers will vanish, leaving him sucking vacuum.
One would expect Plastic Man, Elastic Man and Mister Fantastic to have some serious posture problems, but somehow it never comes up . . .
How big is the list of Superheroes who cannot get tatoos due to invulnerability or healing factor?
Wolverine: I’d like one of those henna tattoos, please. I can’t get a real one …
Artist: Yeah, yeah yeah, I know all about your mutant healing factor. You give that speech at the beginning of every goddamn issue you’re in.
Wolverine: SNIKT!
Why would a healing factor preclude a tattoo? People made this argument about Peter Petrelli’s vanishing tattoo on “Heroes” a couple weeks ago. The needle would still penetrate their skin and the ink would still be deposited.
As for Superman killing himself, immediately post-Crisis he could still fly in space but required a source of oxygen. No idea if they’ve powered him up again since then.
During the Silver Age, Superman was unable to grow a beard; as a side effect of his invulnerability, neither his hair or nails would grow under a yellow sun. He only ever needed to shave if he spent too long in a red-sun environment.
I don’t recall Superman being unable to smoke; but since he’s immune to all normal toxins, presumably the nicotine would have no effect on him. By the same logic, he wouldn’t be able to get high either.
Presumably folks with regenerative abilities wouldn’t be able to keep any of the body piercings that are all the rage with the kids these days. On the other hand, I suppose they could just give themselves a fresh set of punctures every time they go out. However, that seems like it would be a real hassle just to be fashionable, especially in the more sensitive areas.
In general, youth culture and superpowers don’t mix well. You can’t get drunk, you can’t get high, you can’t get tattooed or pierced… Plus, even if you somehow manage to get past all that and achieve success, all your adventures will be painfully embarrassing in ten years anyway because of your horribly dated slang and fashions.
No sex for Ben Grimm’s “Thing.”
For more information on this and other superhero-related topics, ya’ll really oughta get copies of How to Be a Superhero.
I remember one Pre-Crisis story where Superman lost his powers temporarily and as Clark Kent suddenly noticed how much sexier a female co-worker was now that he wasn’t invulnerable to pheromes.
I thought it would suck for Rogue in xmen cause she couldn’t really have any unprotected sex without sucking the life out of them.
Also I don’t understand why the super heros that heal them selfs couldn’t get a tattoo? Aslong as the needles broke the skin and put in the ink they have a tattoo once it heals
Do we have any reason to believe that any portion of Grimm’s hide is that smooth?
Or the opposite; not only would a superwoman be impossible for a normal man to penetrate, if he somehow did the moment she gets excited it’s “Woman of Steel, Man of Toothpaste”. 
Plenty of robotic/android super types can’t enjoy biological pleasures like food.
Deadly Ernest couldn’t have had unprotected sex with a live woman, because his touch was instant death.
Antimatterman couldn’t have touched anyone made of normal matter, I imagine.
Sauron Supermen from the Niven/Pournelle Motie universe can’t enjoy the subtle taste of foods; they were designed to be able to eat anything. They also can’t tell if it tastes bad to normals; they are awful cooks.
Black Bolt can’t talk without destroying everything in range.
I kind of always figured that at one point Rogue wised up and bought a bodystocking…
I guess it depends on when you define “Silver Age,” because back in the late 50s or early 60s, Supes gave himself a shave and haircut by using his heat vision reflected off a mirror.
Hey, you polish something made of stone long enough…
Yeah Ben always struck me as the kind of guy to take matters into his own hands.