look up any word, like half chub:
 
1.
The orthographic interpretation of a mumble uttered in place of a person's name during a sudden lapse of memory. Usually occurs when a person enthusiastically bids farewell to a friend and abruptly pauses mid-phrase to recall the name, emitting this onomatopoeia instead. Oftentimes will be accompanied with a hand over the mouth to distort and muffle the sound panicked facial expression.
Sounds great! SEE YOU NEXT WEEK (putting hand to lips as though to scratch the philtrum) HAAmushhnaagaa (clears throat as a distraction)...
by Yogrrtt Schtory November 07, 2010