Why do people say ‘Jesus H. Christ’? This article examines the historical, satirical, linguistic, cultural, controversial, and evolutionary aspects of this popular phrase, exploring its origins, meanings, uses, and impact in modern language and culture. From its 19th-century roots to its 21st-century memes, we discover how ‘Jesus H. Christ’ reflects the complex interplay of faith, humor, freedom, and meaning in our society today.