Non-Tubber Share definition Flag Aussie slang for a person who doesnt wash him/herself, i.e. avoids the bath 'tub'. Look at him! He's a Non-Tubber! I bet if you scrubbed his back long enough, you'd find his school bag! Non-Tubber by Summers January 22, 2009 0 0 Get merch Get the Non-Tubber mug. Buy Now — $32.95 See more merch