This is research for my next novel people - so it's IMPORTANT!
  1. Hoha?
  2. Hooha?
  3. Hohaa?
  4. Hoohaa?
  5. Hoooha?
  6. Hoohaaa?
  7. Huhaah???
    Suggested by @megbarrett
  8. Hoo-ha
    Suggested by @megbarrett
  9. Hooha
    Urban Dictionary uses this spelling. It's as good a source as any for this kind of thing.
    Suggested by @PassiveAggressor
  10. Had to take a picture of this I saw written in the ladies room yesterday when I was at a concert
    Destiny I tell you 😄