A mother-of-one who developed cravings for sponge during her pregnancy has spoken out about her unusual addiction to foam. Vicky Cullen, 28, not only eats the padding in her own armchair but buys washing-up sponges to snack on and likes to add foam to her recipes when cooking. The single mother from Wakefield, South Yorkshire, estimated she has eaten her way through 2000 sponges since she developed the obsession when she was five-months pregnant with her daughter Olivia, now five. Vicky, who has been diagnosed with pica, an eating disorder which means adults ingest non-nutritive substances, said: 'It's weird to...