night shirt

the nurse worked overnight shift last night. he checked on me and he got to see the t-shirt that maurice had gave me because i wore it to bed last night (it's too big for me and it says in big letters "SEX INSTRUCTOR" then below it, it reads "FIRST LESSON FREE") and the nurse said read my shirt out loud to me and said, "heh.. are these lessons open?" and i don't know what he meant by that but i was thinking in my head, "why? you interested?" but i was thinking that would be kinda inappropriate, especially if that's not what he meant by that, so i didn't say anything. he had been working all night, so i'm sure he was tired and not thinking straight the way it was.