Ok heres a correct definition. :P
1) To whipang someone means to slap them.
2) Whipang is the sound of a slap.
3) If someone is whipanged, they are shamed.
"Oooh whatch out, Patty might whipang you..."
"I think your ass just got whipanged!"
A sound used for whipanging purposes. Used by whipangers. To whipang people.
Whipang!!! Whipang!!! Whipang!!!