noob slap Share definition Flag To be beaten soundly by a noob. Usually follows a long silence where the "pro" either leaves, kicks the noob, or starts ranting. Noob123: "I won right?" Pro1337: "Wtf...j00 h4x0r! Dis be unpossible!" *cries* noob slap by BootlegDVD January 9, 2005 0 0 Get merch Get the noob slap mug. Buy Now — $32.95 See more merch