The 'Mha Hart, Mah Sole' meme is a phonetic misspelling of 'My heart, my soul,' used to convey intense emotional reactions ranging from genuine sadness to overwhelming cuteness. It typically features a character, animal, or person clutching their chest in a dramatic fashion. Originating in the early 2010s on platforms like Tumblr and Twitter, the intentional misspelling became a popular way to signal a 'feels' moment without being overly serious. Today, it is widely used across social media to react to wholesome content, romantic rejection, or any situation that causes a humorous pang of emotional distress.