geektwat Share definition Flag a geektwat is a person you hook up with even though they are kind of lame and you aren't that into them, and then they end up dumping you. "I can't believe that geektwat just broke up with me. I was only dating him to be nice." geektwat by r00ster January 27, 2007 0 0 Get merch Get the geektwat mug. Buy Now — $32.95 See more merch