I just say, "he's on the small side". I too want to go into a schpiel, but I know most people don't have time for it. If they stick around long enough, I'll say the breed standard is under 7 lbs, and that personally I'd prefer it if Thor were a little bigger because I have to watch out for him constantly. If they're still around after THAT, I will tell them everything that is great about Thor until they give up and leave.
