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While one may be tempted to read the Wikipedia article on “meconium”, under no circumstances should one do so, due to the graphic nature of the image therein, unless one enjoys such images as “tubgirl” or those featured on rotten.com.
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Meconium is generally described as “tar-like”, which I think is a pretty good description. Certainly more liquid than that monstrosity in the OP.
OK, time to get really gross - the thing in the OP was obviously either sculpted or collected in water and then cast. It’s all round and tubular, which poops are in a toilet bowl, but not in a diaper, a bucket or even free-form on the floor.
Believe me, I spend a lot of time around composting toilets. Poop smooshes.