Those were all fictional, but that’s not to say that supertiny spylike gadgetry doesn’t exist.

1) The infamous Rod Stewart sperm-in-the-stomach story that resurfaces every five years or so (we're about due for its return). One time this story resurfaced with Jon Bon Jovi as the unfortunate orgy-goer whose over-enthusiasm for oral sex leads him to the nearest emergency room where he promply has a full litre of sperm stomach-pumped out of him. A friend of mine still swears he saw this on Entertainment Tonite!

he entrails, which are the parts aptest to corrupt

The shell-fish called a Nacre, liveth even so with the Pinnotere, which is a little creature like unto a Crabfish[…].