Opposite of peak. Good luck or fortune. When something goes down that is good on your behalf, base for you. When something goes down that is good for someone else, base for them.
"Gerald scored a fit bird, base for him."

"Just found a tenner, base for me"
by Samalam24 May 27, 2017
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This is the Australian version:
1st Base- kissing (french, obviously)
2nd base- Hand job or fingering
3rd Base- Head
4th Base/homerun- sex
"what bases did you get to with that guy last night?"
"only 2nd, and he was pretty shit at it too"
by McGarfield September 1, 2008
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1rst base: Kissing of all sorts
2nd base: Feeling up...above the waste
Short Stop: Fingering and Handjob
3rd base: BJ and eat out
4th base: SEX
by gottalovethatkid27 December 15, 2010
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1st Base: Kissing and above the waist touching
2nd Base: Touching below the waist (inc digital)
3rd Base: Mouth below the waist
4th Base: Going all the way
5th Base: Going all the way (Gays and fun heterosexuals)
6th Base: Going all the way in Kitkat Club
Person A: It's been four hours since I last got ramrailed!
Person B: What?! You went to 5th base an hour ago!
A: Oh yeah. But only 6th base really counts.
B: Let's go all the way tonight, no regrets, just love.
A: Bring your tops and your bottoms, and I don't mean your bikinis.
All: Gorgeous.
by TrademarkKittySound August 27, 2018
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A sexual act of inserting your penis as well as your balls into a vagina or anus.

A insult.
"jesse really took her to the base last night."

Jesse: Apprently you suck.
Kieron: Atleast i dont take it to the base.
by someoneEls October 21, 2008
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To press your "lower" body part(s) up against another person. This is not like dry humping as you do not do a thrusting motion. Can be done unintentionally. Best type of base is when you and some one else's base..well..base =
Giving someone a hug from behind is baseing if your lower parts are touching their backside.
by zarley705 July 22, 2011
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