21th base

When idiots or little kids try attempting to look up bases only to find that 21th isin't even a word.

*Incase you haven't figured, the correct word is 21st Base and theres no such fucking thing*
14 Year Old Boy: OMG OMG I'm so horny from reading these bases especially the Goat Sex 19th Base or whatever the hell it is.
<Types in 21th Base>
Oh...wait....21th isin't even a word I'm fucking stupid.
by MisterrrYu June 15, 2007
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73rd Base

When all the sex scenes in 73 films are reenacted. Including Atonement, Desperate Romantics, Sex in the City and American Pie. These are all filmed and posted on facebook. Links must then be sent to 73 people.
Person A:- Wow, Rob looked rough this morning
Person B:- Well he did reach 73rd base
Person A:- Ohh yeah, I got the link last night
by After Eights April 12, 2010
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1000000th base

The act of having sexual intercourse with everyone on the planet... at the same time, whilst watching an episode of the hit comedy 'friends'

It is also not unusual to grow several detachable penises after u get to the one millionth and one base.
Richard: Dude i got to the 1000000th base last week!

Paul: What! that means you had sex with me! and my mum?! and my dad!!! you fucker!!!! What friends episode were you watching?
by nausia_rules September 29, 2006
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2nd base

Kelsey and her boyfriend got to second base the other day when he went up her shirt and she went down his pants.
by kristy June 30, 2003
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13th Base

having sexual intercourese with your partner while wearing Sherlock Holmes hats, smoking pipes and completing a crossword in under 10 minutes.
I got to 13th Base with the wife yesterday and she came allover my deer stalker
by sergio97 January 01, 2011
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nineteenth base

Nineteenth base is when you bite someone's balls off and stick it up your butt at exactly 10:17 am in a physics lecture at the front of the classroom while simultaneously touching the TA's areolae and solving a very very hard physics problem involving heat transfer of energy, kinematics and forces. All while drinking a extra large coffee - double double from mcdonalds that you got for free because you stole it because you're a naughty boy.
Wow, this morning I got to nineteenth base with my professor! Everyone loved it!
by naaaaaaaaaaaaaaaaan November 09, 2017
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based lifestyle

Living your life with purpose. Using art as your escape from the world
This based lifestyle has me really living
by Tonight138 May 16, 2016
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