Lasterday 

Time period in 24 hours that is undefined and is between yesterday and last night.

She went for jog and sprained her ankle on the trail lasterday.

Lasterday by Short_Stack_2018 November 25, 2023

Lasterday 

The day before yesterday.

Remember when we did that lasterday,

Lasterday by Skinny2theMINI October 24, 2023

lasterbating 

Masterbating so much that your dick falls off and that is your last time masterbating because your dick fell off

Jim: hey what were you doing last night?
Me: I was lasterbating.
Jim: Dude, your dick fell off?
Me: Yep.

lasterbating by Vagina McNuggets September 23, 2012

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

Lastday 

Unofficial replacement for yesterday. Such as referring to the night before as lastnight, the day before is lastday.

I know lastday was Friday because I receive my paltry paycheck on Fridays.

I partied so much lastday that I don't even remember sleeping with my roommates girlfriend lastnight.

Lastday by Emencee February 4, 2008

lasterbation

1. Being the last person to perform in the act of masterbation amongst a group of others. 2. Last minute masterbation. 3. Last time masterbating in one's life. 4. Name of scale to determine how long one is capable of masterbating.

Tom likes watching others pleasure themselves before he sneaks in some lasterbation. Fasterbation

lasterbation by CorpseSaladTime July 29, 2014

Lesterday 

Lesterday means, less than a day ago.

I handed the assignment in lesterday.

Lesterday by FoodLover44 May 21, 2023