Half Dab Share definition Flag A Half Dab is when you place your Mouth and Nose into your Shoulder region without extending your opposite arm to its full extent. When you go to Cough or Sneeze into your Shoulder area you do a Half Dab. Half Dab by LakeMac September 17, 2020 0 0 Get merch Get the Half Dab mug. Buy Now — $32.95 See more merch