Поскольку Вы готовили овсянку, так должен Вы есть это (transliterated: poskol'ku Vy gotovili ovsjanku, tak dolzhen Vy est' jeto), translated to as you cooked the porridge, so you must eat it, is a Russian idiomatic phrase, roughly similar to the English phrase 'you've made your bed; now lie in it'. It is one of the national mottos of Adygea.