Fungus the Bogeyman Plop-Up Book. London: Hamish Hamilton, [1982]. A fine bright copy.

With six double page, full colour working pop-ups. 

Fungus the Bogeyman, a particularly foul and fetid specimen, lives underground, in the dark, dripping tunnels of bogeydom. As he goes about his bogey business, the full horrors of bogeydom are revealed.