yeahyuh! Share definition Flag yeahyuh is a extremly uncool way of tring to say yeah like Usher does in his song YEAH "yeahyuh!' the nerdy kid said then all the other kids looked at him and thought he was extermly stupid. yeahyuh! by andrea May 13, 2005 0 0 Get merch Get the yeahyuh! mug. Buy Now — $32.95 See more merch