howdy scuba...welcome.  good to have you on board, you'll read a few great mods on here so check it all out.
with reference to the, " is tat a six?"  you can try my trick... i tell them its actually a twin and 1 dummy.  they'll always ask more, usually its, "really??" i answer, "yeah kinda, well actually the 1 dummy is the dickhead that believes its a twin.  i always get a laugh...you'll get lots of those, especially when people try and keep up!