The show may be gone, but the spin-off (“Snooki and JWOWW”) and the varying imprint the cast left on viewers isn’t. This musical would clearly be a comedy, one that captures why Americans have obsessed over the drunken shenanigans of the guidos and guidettes. “Jersey Shore: The Musical” would be just like the television show, except with big show-stopping numbers like a sexy rock song to the Situation’s situation, a hazy fight scene between the cast, an ode to the duck phone, and of course a fabulous, huge dance piece titled, “GTL.”