So my knowledge of Spanish is pretty limited but being in South Texas I do run into it, and I've always thought the word "caca" was more analogous to "poop" rat

So my knowledge of Spanish is pretty limited but being in South Texas I do run into it, and I've always thought the word "caca" was more analogous to "poop" rather than "shit"; ie they mean they same thing but one is more offensive. I never know how close Portugese is to Spanish though; it's a language I have next to no exposure to. Interestingly, in American English, we would refer to someone who lies a lot as a "bullshitter" or "full of shit", but someone who is cowardly is a "chickenshit". It sounds like "cagão" is a bit of a combination. Either way it seems like one of those universal human cultural tendencies.