Ava, DH stands for darling husband and she may have been saying her dh had zero (0) idea how to change a tire. The typo is where she typed I instead of is and we all make mistakes even grammar police make mistakes. I just don’t understand why you felt the need to tear her down. I hate making grammar errors but they happen, especially when we type on cell phones, kindle fires, Ipads, laptops, ect. I know my kindle likes to change letters in what I am typing for some reason and if I don’t remember to edit it, it ends up quite different than what I intended.