Sconser
A person who looks around
when talking to you, to see if
there's anyone more interesting
about.

Yes, wwh. I have been "sconsed" a few times myself ... usually when I am doing my own "sconsing". Would you call this a "double sconse"? Have you noticed that "sconsors" are usually too busy "sconsing" to know that they are being being "sconsed"? BTW if a "target" doesn't know he's been targeted, at least initially, that's not such a bad thing. The best terms of derision are like those "bunker busters" they are using in Afghanistan. They squirrel their way in before they explode.