yesternium

A new element in the periodic table that alters the past.
Specifically the past millennium.

80's radio announcer: Time travel to the past 1000 years in a jiffy is now possible thanks to the discovery of the element: yesternium!

by lilsnsh July 8, 2019

Yostedep

A dirty word originating from Switzerland meaning gentiles

Suck my Yostedep

by Makyggdog76 April 13, 2019

Yesterday's Patchwork

Something that happened the day before you don't want to discuss. Usually used ironically.

Person 1: Hey, do you remember when you..........
Person 2: THAT WAS YESTERDAY'S PATCHWORK!!

by Pie In Box November 30, 2019

Yesterday night

Not last night the night before that

Remember yesterday night when i was watching spongebob square pants

by Most logic December 8, 2019

Yesteruary

Do describe an event happened last January

Bro 1: I haven’t been this drunk since Yesteruary
Bro 2 (sober): ok

by Yer not that boi February 23, 2020

YesterNight

YesterNight, because yesterday is only for 12 hours, then it is night..

“Do you remember when we went to bed YesterNight?”

by Bill Knight April 10, 2021

Yesterday's Garbage

A smell or fart that smells like garbage that has been sitting in a metal trash can outside overnight and heated up the next morning by approximately 85°F by a row home.

Consisting of mold, debris, rotten chicken, fish, cheese and the heat allowing scent to travel.

*farts*
Dude! You smell like yesterday's garbage!!

by steammustachio June 24, 2021