A fetus in a jar is a baby that is still in development stages that has died and was put in a jar usually for research purposes.
by QuelfTV October 28, 2019
Originating from a 2014 4chan post from a brony, The Jar is a clear jar containing a figurine (originally a Rainbow Dash pony) that is filled with semen over a period of time. Semen will sit in The Jar for an unhealthy amount of time.
Bro, have you heard about The Jar?
by DamnMan. February 25, 2022
That guy who knows absolutely everything yet lacks any ability to apply said knowledge. He can tell you everything about the processes gone into making the glass jar, how many onions the jar contains, chemical composition of the pickling vinegar, what type of onions they are .... yet has the complete inability to take the lid off.
"Here Jeff, that new project manager is a right ONION JAR, hadn't got a clue which way to turn the spanner to undo that nut!"
by dgh938peg June 14, 2016
by PeeBen December 29, 2011
the type of girl that will scrape a jar after the mix is cooked off ; the smell of the ether is what attracts them. Typically located in Hillsboro Ohio
by Kingspade93 July 01, 2022
by pickledboobs November 21, 2021
Waiting to drop money into a tip jar until the person/people you are tipping are looking on, thus ensuring they witness your act of generosity. Not to be confused with "jar paws".
by caseyLA February 08, 2007