hi-ooo Share definition Flag A way to grab attention of people in a room and basically show you have arrived. There is alot of different people chatting in a room and you walk in and shout hi-ooo and they all notice you. hi-ooo by Fibbbbblybits followon twitter June 15, 2009 0 0 Get merch Get the hi-ooo mug. Buy Now — $32.95 See more merch
