Maybe, maybe not but surely they are mostly water

The problem is that humans are subjective in my opinion. Water is not (or at least not the the degree humans are). With the same pressure, all water freeze at the same temp. Ask a Minnesotan or a Floridian (just to remain within the US, can use Greek/Norwegian for EU) what "cold" means, and they'll have VERY different answers

No they're not. They're just meat popsicles.

I mean, we could get the temperature up to 100 and see which are human and which are meat..