In mathematics, the Klein Bottle is a certain non-orientable surface, i.e. a surface (a two-dimensional topological space), for which there is no distinction between the "inside" and the "outside" of the surface. Its inside is its outside. It contains itself. A Klein bottle is a theoretical entity that exists only in 4 dimensions.

A Klein Asshole, aka Kleinhole, is someone who's assholishness has engulfed them to such a degree that it is no longer possible to tell where the Asshole begins or ends. As opposed to the Klein Bottle, Klein Assholes are very real and exist in 3 dimensions and are all around us.
Those guys from <rival town> aren't just assholes - they're fucking KLEIN ASSHOLES - EVERY ONE OF THEM.
by bdrcm July 26, 2006
Get the klein asshole mug.
A Highschool with lots of hoes, potheads, wannabe bad bitches, and thots. Fake kids, ratchet students, ect.
by Stupidhoe2 February 21, 2019
Get the Klein Cain mug.
The fucking most perfect human alive, absolutely no.1 daddy , wow his jaw line
Uncultured swine: “who’s Paul Klein
Intellectual: “the hottest, sexiest daddy in the entire world
by LANY, LANY August 29, 2018
Get the paul klein mug.
The artist Phil Klein (Philipp Klein) is a German Pop singer that has had several singles in the German Top 100 single charts. He is known for his boyish looks and for his attraction with new stylish clothes.
Singles:
Der Flachleger
Geiler Hintern
by Mark Swan April 7, 2005
Get the Phil Klein mug.
Doing lines or bumps of coke and ketamine at the same time
user1: Who wants to Calvin Klein?!
user2: I do, I do!!!
user3: You betta werk bitch! CK'ing is fierce!!
by CA dream'in August 2, 2006
Get the Calvin Klein mug.
Hila Klein is the wife and best friend of Ethan Klein of h3h3productions. She is known for going along with Ethan's craziness and is apart of a stale joke that fans make in which she is actually Ethan's sister, cousin, special needs helper, etc. She likes sharing sodie pops with Ethan and is known for being a bit of a hip hop. She is well loved by everyone and is surprisingly good at art and dancing.
Person 1: Man, Hila is so awesome!
Person 2: I wish I was Hila Klein! She's so cute!
by A swood guy August 1, 2016
Get the Hila Klein mug.
protagonist of the webnovel, Lord of the Mysteries, and best boy.

*should treat Arrodes better tho
I am spreading the faith of Klein Moretti, and the religion of The Fool.
by thelordofmysteries March 31, 2022
Get the Klein Moretti mug.