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For all those people out there who keep typing in base numbers , there isn't anything past this.
Man 1: Dude i went to 10th base last night!

Man 2: Dude, wtf is that?

169th Base 

To have sexual intercourse with a monkey (any type of monkey) while having Cheese inserted into your arse.
Guy 1 : Hey, i got to 169th base last night.

Guy 2 : Remember the cheese?

Guy 3 : Hell yeah, i used Bree.
169th Base by IcyDeigh March 25, 2010

100th Base 

To gather 217 viagras, wash them all down at once using a gallon of titty residue suckled from Ukrainian prostitutes. And then run dick first through walls of buildings bringing each one to the ground until you reach lake Ontario where you have sex with a majestic mermaid non-stop for 8 days.
"I totally got to 100th Base the other day"

"JESUS CHRIST! How the hell did you have sex with a mermaid"
100th Base by Antoxx January 26, 2009
This is just second base in binary. Nothing to be proud of but makes the beeks feel better.
nerd - "I got to 10th base last night"
dude - "Holly shit what is that"
nerd - "I felt up Holly's tits"
dude - "loser, everyone's done that"
10th Base by -GunnerX December 18, 2008

100th base 

To have sexual intercourse with an entire zoo, the zoo keepers, the vistors, tourists and even the local wildlife that isnt part of the zoo.
Guy 1:"I scored 100th base when I fucked a giraffe,
elephant, zebra,llama, anaconda, gorilla, flamingo, lion, stick insect, panda, rhino, tiger, twenty zoo keepers and 500 random strangers!

Guy 2:...Get out.
10th base is simple. It comes after 9th base, which is anal sex whilst strangling the person, so therefore 10th base is simply death. However, You have the option to have sex with the dead body or just leave it.
"Hey mate, u won't believe it but I finally got there..10th base action last night"

"Omg, trevor, I was joking. You just killed someone"

"Shit"
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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