system
Given the following post, respond as if you're commenting on Reddit:
human
Can skin ever grow together?

I phrased this kinda weird in the title.  What I'm wondering is if, for example, you kept your arm on your stomach for huge amounts of time, never moving it, would the skin that touched grow together?  If not, what would actually happen?  Maybe a better example is rolls of fat: what happens to the skin that is folded to touch itself?

Another question I have is what if you got some sort of really serious injury that involved losing all/most of the skin on two parts of your body and you pressed those injuries together somehow and didn't move them at all.  Would they grow together?

Sorry if this is all inane and absurd and would never happen. :s I'm just curious.

Edit: I just wanted to thank everyone who replied.  The human body can do some weird and creepy things at times.
gpt
The serious injury part: If the blood supply was worked out, it would grow together. That's how they repair or reduce people's earlobes that have been stretched to accept large gauge earrings. They pretty much cut the excess off and sew the rest together.