I used to be an appraiser as well, this brought back a few chuckles, but your right hand them a card and they are your friends wanting to discuss the value of their house.
The gnarliest job I had like that was investigating houses in foreclosure going to auction. Most were vacant most of the time, this one house a young attractive spanish speaking lady answers the door and I'm trying to explain what I'm doing there, when I hear a bunch of motorcycles approaching. I turn around and about 50 motorcycle gang dudes all tatted and patched up come rolling onto the front lawn. I just about crapped myself, so when they asked what I was doing I explained and switched the topic to motorcycles. Could not leave that place fast enough.