What do you think?

So I just heard the "key and lock" analogy for the first time and personally, it kinda irritates me how some people can think that way but that's just me. For anyone who doesn't know what the key and lock analogy is, it's an analogy where the key is the man's parts and the lock is the women's parts and it goes like this:

"If a key can open a lot of locks, then it's a master key. But if a lock can be opened by lots of keys, then it's a bad lock."

I know everyone has their own opinions, I'm interested in what others have to say about it. Do you agree or disagree with this statement?