You start out at home plate. Then, the ball is pitched to you, run to 1st base followed by 3rd base and then home plate again. Those are the bases.
guy1:"I was at first base. Then i was at second base. Then i was at third base. Then i was at home plate. So that means that i ran all of the bases."
guy2:"Wow! That's really informational!"
pervert:"Wow! That's really informational!"
by 50uno January 25, 2008
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the bases of dating, show how far you went with your boyfriend/girlfriend
1st base - making out
2nd base - hand job, fingering
3rd base - blow job, eat out
4th base - the big shebang, sex
by bingtong September 28, 2011
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1st - Kissing, heavy petting, dry sex
2nd - Finger, Hand Job
3rd - Oral, fellatio (blow job), cunnilingus(eating out)
Home Run - Sex

*Titties are irrelevant*
Guy: Man, that girl sucked her way to third base last night!
Other Guy: Hopefully you'll score a homerun tonight!

Dude: I'll probably round all the bases with her tonight!
by The Robone April 12, 2006
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the sickness of all evil...if u go there u must be an insane be otch ok im done
wut school do u go to?
basis scottsdale
where is that?
um....i dunno
by Annie April 12, 2005
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1st base - a pull with tongues

2nd base - poke or handy

3rd base - lick out or blowing

4th base - All the way
At the school disco me and Danny found a classroom, and we pulled he already knew the bases, whereas I wasn't as experienced, I'd only pulled before. I gave him a handy and as my reward he poked me, but then I wanted to take him further, apparently so did he, so he pulled up my skirt and I lay on the desk and he licked me out, his warm, wet tongue on my pussy felt so good, I felt so horny so I gave him a blow job and he jizzed in my mouth his cum tasted so good, eventually we went all the way, the teachers couldn't find us and we spent the night together...

After getting drunk on the Saturday, we went back to Georgia's because her parents were out. We called in Jack and Rory, they came running. Once they arrived Georgia and Jack went through to her room, they were humping so hard the bed was hitting against the wall and Rory and I could hear it in the next room. He poked me whilst sitting on Georgia's sofa, then Jack and her came through and it was me and Rory's turn. We went through and he fucked me so hard my pussy is still hurting, we came back through to the lounge and Georgia and Jack were having sex, so me and Rory joined in and we had the best foursome ever, Rory licked me out, I licked out Georgia and Jack analed me and georgia gave jack a blow job. I think we can all agree that was the best night of our lives...
by Pseudonymopi9076 June 13, 2009
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There are many versions of the "bases". Usually used by immature children or teens who still laugh when someone says penis. Those same kids are the ones who cant say the word penis but have to use signals with their eyes or say, "the you know what ;-).
-Hey, i got to FIRST BASE today!!!
-With who?
-OMG did you get to see his... well you know.
by Reilly February 21, 2005
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Terms named after baseball bases, that determine how intimate a sexual activity was. The bases are different steps of making out that often lead up to sex (straight, gay, or lesbian sex).

Note: When it is the person's first time, it must go all the way home for it to be considered a loss of virginity.

First base: Kissing (Making out, French kissing, hickeys)

Second base: Clothed stimulation (Feeling up, clothed grinding)

Third base: Unclothed stimulation, one partner to another (Hand job, anal or vaginal fingering, cunnilingus, annilingus)

Fourth Base: Unclothed simultaneous stimulation (vaginal sex, anal sex, mutual oral sex, tribadism, frottage)
Person 1: I can't believe you're still a virgin.

Person 2: Hey hey, me and my new girlfriend got to third base already! We already passed the first two bases, it won't be long before we make a home run.
by Ieatcheesebagels February 14, 2017
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