Lasturday

Lass-tur-day (Not last-turd-day)
The day before yesterday. (The opposite of the German word Übermorgen, which is the day after tomorrow.)

John: Dude, what happened lasturday?

Luke: We got hammered and ended up on McDonald's roof.

Lasturday by Billy-Jean March 4, 2010

Lasturday

Referring to that time when you last did something.

Remember when we went skiing lasturday?

Lasturday by ImUrHuck1berry February 6, 2021

Lasterday 

The word you use when you are talking about something that happened in the recent past, but you can't remember the exact day (due to a black out), or it really doesn't have any significance to the story...or you just can't be bothered to think hard enough to remember it.

Amber: I just went to a Ween concert in Anaheim.
Penny: Really, when was that?
Amber: Lasterday, I think.

Lasterday by DeedleDawn October 7, 2009

Lasterday 

The day before yesterday.

Today is tuesday, which means Sunday was Lasterday.

Lasterday by Teatime777 December 28, 2015

Lasterday 

Any day prior to the present day.

Remember lasterday, when you were born and then started driving.

Lasterday by Angelpie November 27, 2012

Lasterday 

When you don't remember what happened LAST night but knew it was YESTERDAY.

I smashed on this beezy lasterday.

Lasterday by Antdizzle310 June 17, 2013

Lasterday 

Yesterday, the day before today

Sorry I missed play rehearsal lasterday, I had so much homework!

Lasterday by ShadowCaster07 May 9, 2011