2 definitions by MexicanJunior

An adult who was born in the new millennium (Born on January 1, 2000 or later). Typically, someone born in the new millennium becomes a millennium adult when he or she reaches the age 18 (In most countries).
Scott to Mom: Hey mom.
Mom to Scott: Hey my baby, happy birthday! I can't believe you're 17 you are growing up so fast!
Scott to Mom: Actually mom....I'm 18.
Mott to Scott: Wait, no you aren't.

Scott to Mom: Yes I am mom. I was born in 2000, not 2001.

Mom to Scott: Oh no...my baby is a millennium adult (vomits)_
Scott to Mom: Are you alright mother?
by MexicanJunior December 30, 2017
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The second year of the new millennium and of the 2000s. 2001 was a really good year (Excluding the 9/11 event).

It was the last year of the 90s setting, but not the decade which ended two years before. (In 1999 - of course, however the setting was still there in 2000 and half in 2001). GameCube and Xbox were born, Nickelodeon aired shows like As told by ginger, Rugrats, Hey Arnold, CatDog, etc. meanwhile, social media did not exist back in 2001, so everyone talked to each other with their eyes locked, rather than using their phones to text each other, even though they are literally sitting next to each other. The year where iPhones were flip phones, and the first iPod was born. Great music was up, like It wasn't me from Shaggy or Can't get you out of my head.
Ian to Alex: Hey Alex, come to my New Years party and welcome the new year 2001!
Alex to Ian: Alright let's do this!
by MexicanJunior December 30, 2017
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