When someone is doing, saying, or thinking something very stupid, something that cannot be explained or justified with reason.
Jamal: Man, Tyrone I wanted to go to the movies with you. I thought you was in Hawaii.
Tyrone: Brotha, I been snapping you all week. You niching.
A group of people who think they are truly unique and special but probably aren't
Those vsco girls think they are so niche niche
by drummer80y February 21, 2020
A bad idea, or a no-no; expressing disapproval.
Pronounced neesh-neesh
Jeff says, "Hey guys, lets go down to the salvage yard and sell the metal to make a buck!"

Everyone else, in unison: "niche-niche"
by SeffreyJimon October 8, 2007
As used in gaming

Something that has situational use
Something that has little to no use
"The term niche is niche because it can't be used everywhere."

"Algebra is niche because not everyone will actually need to use it."
by The Gayside of Tina Fey January 24, 2017
1. A position or activity that particularly suits somebody's talents and personality or that somebody can make his or her own.

2. An area of the market specializing in one type of product or service.

3. Place in nature: The role of an organism within its natural environment that determines its relations with other organisms and ensures its survival.

4. A recess in a wall, especially one made to hold a statue.

5. Hollow place: any recess or hollow, e.g. in a rock formation.
1. She carved out her own niche in the industry.
2. Designed to undercut the competition in the same niche.
by Jafje April 10, 2007
A human being who's love is so strong you can't live without it, for without it you would die.
If my Nicholas goes away, I don't know what I would do. I would most likely die.
by michaelsdfdsfdsfsdf February 17, 2008
The area of skin on the backside of your knees. This area is commonly suceptible to sunburns especially to gingers. Similar to the reverse side of your wenis aka a wiche.
Wow, Jessiann really burned her niches! let's make fun of her!
by Sammsizzle September 9, 2010