In an interview someone mentioned a protection used when filming scenes featuring simulated sex for mainstream movies. Is there an image of such a contraption? I'm curious how this works.
The male item of costume is called, rather unceremoniously, a cock sock. The female, a snatch patch.
Like it or lump it, that's what they're called.
Basically, a flesh-coloured piece of rather thick material, more like a wash-leather than woven material. The male version is a simple bag with an elastic pull-tie at the top. The female version is flat-ish and is stuck on with adhesive. [I've never actually seen one of these up close - it's not something you really ask about].
I don't think pictures or detailed fitting instructions would be necessary or quite appropriate.
These days due to fashion, quite often a merkin is added, especially for period drama, to give that authentic look.
Anecdotally, though cock socks come in two sizes, costume will always offer the large. You can have a medium if you ask. They don't make small.
If anyone needs citation further than, "I've worn one" ;) then see Cosmopolitan - 10 Surprising Facts About How Hollywood Sex Scenes Really Get Made
This is a bag of marbles. Use your imagination.
Unsurprisingly, if you google 'cock sock' you will struggle to find the simple flesh-coloured ones used for filming. You will find, errmm… more ornate ones, usually being worn. You've been warned.