The Poss head is a manikin head (often used for wigs) that is possessed by an evil entity. The Poss head's purpose is to posses people and be the new host of their body. This entity is a nothing but a myth as it hasn’t been proved to actually exist. The word “Poss” is short for possession and “head” because it’s a manikin head.
by Bellatrix Rigel July 14, 2024

A large group of grad students at Penn State who drink away their worries every week (and usually multiple times per week) at a hole-in-the-wall bar. Generally only consists of science-minded grad students. (N.B. The "groovy" times do not always have to involve alcohol, and can, in fact, involve many different substances.)
Last night I went out with the Groovy Time Posse, and bitched about undergrads while taking tequila shots.
by NotAnUndergrad May 20, 2010

by Dumbledizz March 3, 2021

by LYRIX.870 September 11, 2023

by Yourmommawasinmybedtheothernig December 27, 2022

A rap song consisting of at least 3 guest verses from other artists, as if all the artists were a posse.
Some examples of Posse Rap songs include Monster by Kanye West, Fuckin Problems and 1Train by A$AP Rocky and Forever by Drake
Some examples of Posse Rap songs include Monster by Kanye West, Fuckin Problems and 1Train by A$AP Rocky and Forever by Drake
by SADNIG March 21, 2021

The most hype NFT community on Twitter, we spend our day scouring the web for PSSSSD references and stalk Lab Techs during our free time, we also take a break on Sunday.
Yo man, the posse just spent an hour in a Twitter space where the host fell asleep and no one was talking: dopest community.
by elontusk May 7, 2022
