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>>21418
Um... No. Don't spread misinformation, especially wrong information about vaginas on a porn site.
http://en.wikipedia.org/wiki/Hymen
For a TLDR, the hymen has a hole in it, and by puberty it is very thin and delicate. It is not at all common for it to be elastic, and arousal does not influence it's elasticity. It will not grow back, they have a surgery for this. In most circumstances, the hymen MUST be torn for successful sexual intercourse.