The growing popularity of the internet has led to the creation of new online social spaces and subcultures, often with their own linguistic personas and associated speech styles. The thesis examines one such proposed speech style called “Mock Infantile Speech” (MIS) through a sociolinguistic lens, attempting to connect individual phonetic and phonological features to aspects of a larger “uwu” persona. Raised F0 values, retraction of sibilants, liquid modification, and interdental stopping in the mock and standard guises are compared across speakers who successfully use Mock Infantile Speech. The analysis demonstrates that a difference between guises is significant and subsequently contextualizes Mock Infantile Speech in its relationships to language, gender, the internet, and child speech.