*sigh* I'm sorry to say you can't fuck this one, but a lot of ammonite fossils are in kind of a bad shape so some of the inner part of the spiral may be missing, thus allowing us to use it as a pasta measurer or enabling you to put whatever you want in it.
Bleeding will definitely occur, we're (sadly) talking about fucking rocks here.
Bleeding will definitely occur, we're (sadly) talking about fucking rocks here.