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An unusual possibility of someone whom is a niece and a sister at the same time; capable of occuring when a woman has a child with a father and another with his son, or when a man produces children with a mother and a daughter, the niester being the result of the one person and the younger generation (having the child with the son or daughter) as related to the other child.
Family reunion this weekend! I can't wait to see Colleen, whom is my niester. What's a niester you may be asking yourself? Well, my Dad had a kid with my sister, which makes her my sister and my niece at the same time. Yeah, I know, we're a bunch of rednecks.
Niester by fartknocker101 December 22, 2009
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When one's sibling has a daughter with their parent, the child becomes their niester; a niece because they're their sibling's daughter, and a sister being their parent's daughter, making her a niester.
My niester Ruby is so hot, I just might have to date her and take her to prom this year.
Niester by fartknocker101 December 24, 2009
Related Words

nietering 

Verb: The process of doing little or no action. Standing or sitting in one place for an extended period of time, instead of doing what your supposed to be doing. Smoking weed enhances this phenomenon.
"Stop nietering around and let others use the couch!"

"Hey Brian, if you keep nietering around you will never graduate from college."
nietering by Ty Bosch May 18, 2006

empty nester 

A parent whose children have grown up and left home.
Your daughter's come of age, eh? Well, you'll be an empty nester soon!
empty nester by wmem May 9, 2006

Mrs. Nester

When you pull up and twerk on your principal's meat and produce very athletic offspring. You also get very sunburnt during intercourse.
Dawg, Mrs. Thompson just Mrs. Nestered me and now my sunburn is third degree.
Mrs. Nester by Gary Boi November 16, 2018

Nesterday 

1. When a 5 year old is trying to explain what he did or is going to do or tell you about something but, since he has no concept yet in length of time to when it really happened or will in the future.

2. A generic "fill-in the blank" day when you really don't know or care about the right answer or your not really going to do it in the first place and blow it off.
Mom: So, Billy when did you make that gift for me at school?Billy answers very excited with a big proud of himself smile: "Oh, I made it like Nesterday or the day before or something!"

Or for the adult with a 5 year olds attitude: when someone calls you requesting a payment of some sort and wants to make arrangements and you answer them with (attitude of course) "Ya, I can pay you like uhm, nesterday. Usually then you end the phone call by giving them "click"and hanging up.

yesterday last time next time never last week next week some day day
Nesterday by GiaMamaMia February 11, 2010

NicsterV 

What that "ZephPlays" guy said. Seriously, what he said is true. NicsterV is a fucking clickbaiter that all the 4-10 year olds watch.
Random 8 year old imposter: I am real nic
Me: No you're not. Besides, even if you were, I fucking hate NicsterV anyways, so shut the fuck up.
NicsterV by PI55 September 3, 2018