He should be more careful what he puts in his mouth.
Buttplug illustrates the mind that has been affected by living too long on the fantasy land of the Unicorn Farm. A survival skill he has learned is eating the Unicorn poop as a source of protein. A long time sufferer of foot-in-mouth disease, recently his feet appear to have grown hoofs. Soon he will be sprouting horns and be known as Red Man Bad.