When you die trying to get to 4th base.
Guy: Hey dude! I hear you got to -4th base last night!!....
dude?...dude...?...
作者 link2link25 2010年2月27日

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Top Definition
sex
When you go to 4th base w/ someone...you have sex
作者 kristy 2003年6月30日

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You've left third base already, but failed to reach home. Now you are currently stuck in the twilight zone of an awkward, in-between base. I am not talking baseball.
Jerry left Bible study early, so 4th base was as far as we got.
作者 Skullwood 2015年6月30日

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When you have sex (looking this up is kind of sad)
Guy: Baby Lets go to 4th base tonite
Girl: I'm On my period
Guy: oh come on i been wanting to nail you for ages!
作者 Gioj4 2008年8月18日

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TO FUCK LIKE A DOG !!!! when u tell someone you got to 4th base they are very proud
i told my dad i got to 4th base with my gf he gave me a pat on the back
作者 porno 2005年5月21日

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to get to 4th base is to have anal sex.
"I got to 4th base last night with jenna"
"oh so you had anal sex with jenna?"
"yep, that's what 4th base means"
作者 sam all together 2007年8月24日

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