(1) A word similar to any common swear/curse/obscenity that you would hear or say.
(2) An Idiot
(3) A person who thinks they know what they're talking about but really gets schooled in their own topic, that they think they know more about then you, all the time.
(1) Son of a Yarbrough! You're such a little Yarbrough. Your Mom is a Yarbrough. I Yarbroughed your mom last night.
(2) Dude you are such a yarbrough for throwing up on your date
(3) That kid is such a yarbrough for thinking he knew more about Children of Bodom then me, since I'm the guitarist in that band.