lip donut Share definition Flag The "0" shape of the females mouth prior to performing a log wash, blow job, felacio, hummer or suck job. Sam: You know that girl Sally? Ralph: I think so... Sam: She plants the best lip donutsRalph: Nice lip donut by Brave Dave C February 28, 2016 0 0 Get merch Get the lip donut mug. Buy Now — $32.95 See more merch