unclewayne Share definition Flag someone who thinks he is right all the time,and will go to any extreme to prove it. Dictionary says "superman is a superhero!" unclewayne says "No I use new dictionary so tell your kids it now is cum on someones back" unclewayne by thinkbefoeyouspeak July 5, 2008 0 0 Get merch Get the unclewayne mug. Buy Now — $32.95 See more merch