“Old Macdonald heard a fart … E-I-E-I-O!” There are some VERY rude noises coming from Old Macdonald's farm – who could be responsible?! Sing along to this side-splitting picture book adaptation of everyone's favourite nursery rhyme. Old Macdonald's busy day on the farm keeps getting interrupted by some VERY rude noises … but who could they be coming from?! A hilarious and irreverent take on the classic nursery song from debut author/illustrator, Olaf Falafel, with helpful do-it-yourself instructions so you can fart along to your heart's content! Perfect for fans of The Dinosaur That Pooped series.