Fifth Grader

Someone who falls in the prepubesent age group who is very annoying, overweight, tags along with older sibilings. and thimks they know everything.

Bob is such a fifth grader

by Detroitlions Guy 34 March 30, 2009

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fifth challenge

A contest between individuals in which each participant is given a fifth of liquor of their choice. The objective is to drink the fifth before the end of a designated time period, typically the end of the night. True champions are known to use Bacardi 151.

Paul: Yo Diaz, you have 30 minutes left to finish the fifth challenge

Diaz: Shit man, that's like 5 more shots.

by PaulCP March 29, 2006

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Fifth Base

Anal Sex

My girlfriend let me go to fifth base.

by Lazarus69 July 01, 2018

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fifth base

The only base you can slide into where you KNOW you'll get your pants muddy.

Brian: How far'd ya get with her?

Mike: Fifth base!

Brian: Really?

Mike: Yeah, this mourning I totally had to wash the uniform.

by Brian_is_tasty July 01, 2006

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fifth base

When you get past fourth base on a chick, (or on a guy if your queer). This is when you place your meat in her ass. Commonley refered to as Puerto Rican style.

Hey TJ, I fith based this chick on saturday night, Puerto Rican style. I pulled out and there was a peice of corn on my helmut.

by Kelly June 03, 2003

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