This is the hilarious moment a two-year-old from Wales called his mum a "dirty cow" after being tricked by the viral poo challenge.<br /><br />The clip, filmed at their home in Wales shows Louisa wiping chocolate spread on her son Morgan's hand pretending it is actually poo. <br /><br />When Morgan sees the mess he looks at his mum and says "you dirty cow, it's your poo!" before giggling about it.
