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the alter ego of Amanda. Typically after consuming copious amounts of alcohol. Most likely when Amanda is blacked out. She can be fun and crazy or turn into a total b*tch.

Also can refer to the times when an Amanda is especially demanding
Whoa Demanda came out in full force last night, were you blacked out?!?

Looks like Demanda is rearing her ugly head, nothing is pleasing her right now (typically whispered behind an Amanda's back)
by amanjoh January 15, 2014