Top Definition
Short for nausea, heartburn, indigestion, upset stomach, diarrhea. Originated from Pepto Bismo's catchline.

Can be used in place of the words Pepto Bismo.
Example 1:

Person 1: Ugh I feel so sick today.
Person 2: Go take some nhiusd stuff!

Example 2:

Person 1: I have nhiusd...
Person 2: Go take some Pepto Bismo!
by MajesticMoose March 20, 2010

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