The act of calling out someone's name when they are the
perfect distance so that they can hear you but they won't know who did it. This
may also be done from a
car by yelling "MA'AM' or 'SIR". When and if you get someone good it's quite hilarious. This was started in Keller, Texas.
*Man walking down the
street* (you and your bro in your
car) "SIR" *man looks around in confusement*
your bro says: Man, I love
jaying someone up.