Students like them.
“Analyses indicated that the presence of tattoos was associated with some positive changes in ratings…”
128 undergraduates’ perceptions of tattoos on a model described as a college instructor were assessed. They viewed one of four photographs of a tattooed or nontattooed female model. Students rated her on nine teaching-related characteristics. Analyses indicated that the presence of tattoos was associated with some positive changes in ratings: students’ motivation, being imaginative about assignments, and how likely students were to recommend her as an instructor.
Source: “Perceptions of a tattooed college instructor.” from Psychol Rep. 2010 Jun;106(3):845-50.
While we may think of guys with tattoos as tough and badass, I learned in this book that one of the most consistent findings among Navy Seal instructors is that guys with tattoos tend not to make the grade.