A 21-year-old girl who is a dental nurse by profession sufferes from a rare disorder. She loves eating washing-up sponges and so far gobbled 4,000 of them. The girl loves to spice the sponges up with BBQ sauce, ketchup, mustard, jam and honey, reports The Sun. She even dips her bizarre snack item into regular beverages like hot chocolate or tea like one does with biscuits. Pica, the rare disorder, causes patients to crave for non-food objects. Those who suffer eat anything from metal, coal, sand, chalk, lightbulbs to furniture. Kerry Trebilcock also eats soaps. However, she only sticks to organic varieties and she likes them in lime flavour. Kerry was quoted by the UK daily as saying: \"I have been very particular about the type of sponges and soaps I\'d eat and how I\'d prepare them. \"If I went out for the day I\'d carry a small plastic bag of cut-up pieces of sponge with some tomato and BBQ sauce in Tupperware. I was never without a \'snack\'.\" Life is not easy for pics sufferers. Kerry weighs only 8 stones and she has to endure terrible stomach cramps, constipation and diarrhoea quite often.