The purpose of this article is to explore textism in English as adopted by American deaf adolescents, examining its features and social function within the under-represented population of deaf teens in growing research on texting. This case study collected a corpus of 370 text messages exchanged via cell phone between a high-school pair at a US residential school. Also included were survey responses from 35 high-school students and interviews with the texting pair and several teachers, all of which enhanced the understanding of how deaf adolescents at this school used texting for communication. The corpus was analyzed, along with the surveyed general characteristics of texting. The pair’s messages indicated that the deaf adolescents adopted various characteristics of textism used by the English-speaking hearing adolescents studied by other researchers. However, the corpus also showed incidents of characteristics unique to the deaf teens’ texting, such as structural transfer from sign language.