w99t Share definition Flag The facetious version of "w00t", which has been combined with "rolling one's eyes" (99) . "Yippee. Hoo-ray." "My boss is upgrading my workstation. From a 486 to a Celeron. w99t." w99t by TheSHAD0W December 7, 2006 0 0 Get merch Get the w99t mug. Buy Now — $32.95 See more merch