Why does he answer by human's name "Jesus H Christ"?
Native speaker’s answer
Rebecca
"Jesus H Christ" is an interjection used to express surprise, anger, or frustration, and is similar to saying "oh my God". The more common interjection is "Jesus Christ", which refers to Jesus, the son of God in the bible. However, the letter "H" in this case resembles an initial of a person's name and is used for the intent of being more humorous.