Wig Alert!
I was walking down this kind of funky street in the city where I live, and as I passed a group of teens (why is it always teens!), they started to yell, WIG ALERT! WIG ALERT!  I ignored them, but they followed me for about a block, saying things like "do you think its alive"?  "I wonder what he feeds it".  "Do you think its on backwards"?  "Maybe he doesnt know its up there".
Compliments
1) Passing a nicely dressed guy on the street, as we pass he  says, "Nice rug, man"
2) walking down the steps in a train station, a guy coming up the steps says, "Oh, THATS undetectable"