Is that a dicho? I would think that you'd typically use estar in that situation but i'm curious because i'm trying to learn the language.

I'm not sure, so please don't quote me on this, but I believe you could go either way, depending on how how you interpret the sentence "Shrek is piss".

One way to look at it, is as a mangled version of the sentence "Shrek is pissed". In this case, yes, I do think you'd use estar; being pissed is a transient emotion that Shrek is experiencing, and it's not one of those bullshit phrases that uses tener instead. Or at least "x is angry" isn't, I'm assuming "x is pissed" follows the same rule.

I prefer to parse the sentence literally, Shrek's not just pissed, he IS piss. That is to say, either he's a big bucket of literal piss, or being pissed is a fundamental aspect of his nature, like he's some kind of big green Piss Elemental. Hence ser.

But my knowledge of Spanish is mostly limited to swearwords and Puerto Rican colloquialisms, so hell if I know.

You people and your made up nerd languages! This isn't Middle Earth, dweebs!

Thanks for the thorough response! I think I mistook that word for 'miedo,' as in shrek tiene miedo... which makes my estar inquiry even less appropriate.

His routine reminded me of Little Steven

A few times I heard Puta Gato. Which is pretty damn 5 star worthy.