A phrase used to say someone is so stupid that they can't even reproduce, they
just have water for
sperm because they can't even do what all living things are supposed to be able to do. This can be used to talk about women to say that they are stupid, but it's mostly
men.
"Like I
said before the
Bible says the Earth is flat."
"You're going through the same arguements with no other evidence, it sounds
like water's traveling through your balls, man."