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passback 

The passback is a sex move. It involves one male and one female. This sequence of events, if properly executed, constitutes a passback:
1. The male ejaculates into the female's nose
2. The female snorts up the semen and "hocks" it
3. The semen is spat back into the male's mouth
4. The male spits it into the the female's vagina
5. The female must subsequently show evidence of proper execution—pregnancy or an STD, for example
Bro 1: Bro, I'm itching for a freaky slam piece.
Bro 2: I got just the cum dumpster in mind.
Bro 1: Really? Will she do the passback?
Bro 2: Yeah, bro, I already pulled that DW passback on her.
Bro 1: No shit? How was it?
Bro 2: Fan-fucking-tastic.
passback by djddub May 18, 2011

Portland Passback 

It's where you freeze your poo, and put it up your mate's bum. Then he poos it back in to your hand.
Hey mate, we're bro's, right? Lets do a Portland Passback!
Portland Passback by SelfishSi June 10, 2018

Mexican Passback

When similar looking people share the same photo ID or season pass to get into events by discreetly passing backwards the first person's ID to the second after the first already entered.

Called Mexican Passback because Mexicans are both cheap (wouldn't buy an extra pass) and they all look the same.
Ricardo: (enters concert with pass, performs a Mexican Passback to Roberto)
Roberto: (hands pass to guard)
Guard: Didn't you just enter 5 min ago Ricardo?
Roberto: Yes, Hello, I am Ricardo, I just had to step out for a moment
Mexican Passback by qwerty732 June 28, 2023

pissback 

The small yet numerous particles of urine that are reflected back at you when you pee into a urinal/toilet bowl. This phenomena usually happens when too much force is exerted when trying to force the urine out, causing the pee to have such a high velocity that when it strikes the surface (either water or porcelian) it instantly atomizes and reflects back toward the direction where it originated from.
There's all this pissback on the floor by your toilet man, clean that up.
pissback by Daddie March 22, 2007

Pashback 

The day after the night before; when you are revisited by the passionate antics you got up to in the form of a "flashback" the following day/week.
Amber "What is up with you bro? focus!"
Caitlin "Dude i'm totally getting pashbacks from last night, I can't concentrate."
Pashback by Lemon Ghoul February 23, 2010

pussback 

When your name starts with a J and your roast beef pussy bypasses your ass to your back to say hello
My pussback is being mean today
pussback by anonymous January 11, 2022
More from Urban Dictionary

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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