I can't really say that I am one protocol, I would rather think of myself as an old clunky server, with a bunch of ports open. (going by Schemer's definitions)

• If I am talking code, I would say UDP, definetely. (but they either walk away or their eye's glaze over)
• TFTP at home, I have a 7 year old and 2 year old twins, essential details are important.