an example of the word poser would be a preppy bitch. one day she is preppy. the next day she is wearing all black with dark eyeliner and acts emo.
by urbanisbeastman December 16, 2008

Someone that thinks a team wants to be like another team because the other team has the better record. Nobody likes to lose, but would you rather lose as you or win as somebody else? It doesn't take any honor to win.
If you're not fighting as you, what's the point of being undefeated? People wouldn't allow their team to lose without a fight, but before they wouldn't let them lose, they wouldn't let them become a poser team. They would rather their team be losers or underachievers who were themselves than to be overachievers who were somebody else, even if it seemed stupid to everybody else.
by Solid Mantis April 16, 2021

Someone who tries to come off as serious and as someone who doesn't take themself too seriously at the same time, without really being either one.
Lindsay, the mollycoddle girl, was the kind of poser who would try to make fun of scientists then become the scientist. The same kind of person who would try to ridicule routine and responsibility, then pose as a serious person when it was convenient.
by Solid Mantis November 2, 2019

Someone who portrays themself as a hero, or a villain, or has somebody else portray them as a hero, or villain.
The two girls posed for a photo for the books before running off with all the money, just like the rest. That made them posers, not heroes.
by Solid Mantis January 7, 2021

Somebody that lies about every aspect of their life, what they believe in, what they feel, and who they are. Somebody that has an endless amount of false names, not false screen names or something mostly benign, something a bit more malicious, but has many false names in real life and claims each one of them is his/her real name.
The girl was the kind of poser that didn't want anyone to accurately identify her, so she had numerous false names and looked like a different person on the outside almost every time you saw her.
by Solid Mantis May 12, 2021

Someone who starts posing as an oddball or a weirdo once the stigma is gone and there's no social consequence. The kind of people who wouldn't smoke pot or do any drugs that would make them look like junkies until there was no stigma and everybody did it.
The oddball poser found a sense of comradery with a group of other oddball posers once there were no more odd people left, and phasing them out was complete.
by Solid Mantis May 1, 2020

"Ay boi did you watch naruto?"
"Yea i did, my favorite character is Naruto."
"Bruh, you are poser af"
"Yea i did, my favorite character is Naruto."
"Bruh, you are poser af"
by KekBoi96024 December 10, 2020
