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[–]oyasuminasai50 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

Some of them have that "hydraulic" device. Some have a metal wire that you can manipulate to look "erect." Many don't pursue these because they're more expensive. As such most are just literally slabs of flesh sewn onto the crotch.