There may not be anything disgusting with a toilet mug. After all, it is just another mug – something that you drink from. Only that it is shaped like a toilet which we associate with something gross.
But how about if you put in a scoop of chocolate ice-cream or two? You know, anything that is brownish and look like poop? Would that change anything? Would your ice-cream still taste as yummy? Or something would have change… when your mind keep thinking of something else?