The nature of this subject being as it is the toilet is only photographed in a mirror. The toilet itself must presumably exist but the inclusion of a mirror into the shot creates a question mark in our minds. We only get to see the cistern and the toilet seat.
Not seen in this photograph is the fact that the light only comes on in this toilet when someone enters which adding to the illusional nature of the composition.
You need to get out more Tref!!
You need to get out more Tref you Welsh loon!!!