As the original poster -- In a social (non-work) situation, I have used several of the "responses" -- or sometimes just answered straight out. BUT what really got to me was this was a STUDENT asking a TEACHER. (and as an "out" teacher in California at the moment, I'm very very conscience about what I say and what I do and making sure I am professional at all times.)

Thanks for all the comments on being a "cool" teacher for wearing a kilt. We'll see if my students grades improve - in which case I'll suggest to everyone to wear a kilt -- it's for the students benefit!!!

Cheers
Chris