Jexxx Share definition Flag a person who is a complete genius, but also a cool dude, who is of course, loved by all those by the name lewis Man 1: Woah did you see that Jexxx girl? She's totally loved by that Lewis guy! Jexxx by lewismac March 23, 2010 0 0 Get merch Get the Jexxx mug. Buy Now — $32.95 See more merch