Fifth Base

Fifth base is fucking a girl in the asshole.

Man, that girl has an onion ass.....I hope I get to fifth base on that shit!

by Pierce Binoche September 2, 2004

Fifth Avenue

A famous avenue in Manhattan that separates the east side of Manhattan from the west side in New York City.

"And who today would call on you to do miracles when the advertisements of Fifth Avenue and the lights of the elevator in the Eiffel Tower have changed night into day with a luminosity a hundred times more magnificent than that borne by Lucifer?” (an excerpt from Lucifer Unemployed by Aleksabder Wat)

by j0nni May 13, 2005

Fifth Day of Christmas Burger

A special Bob's Burgers burger that's served with "five golden rings of onion"

"Hey Bob, what's the burger of the day?" "It's the Fifth Day of Christmas Burger, you should try it!"

by America Lover 🇺🇸 November 16, 2018

fifth hacker

Someone who is considered even by hackers to be a disgusting, raunchy, nasty individual. Origin: "Four out of five hackers agree: Urban Dictionary's definition of 'doggy bag' is fucked up." "...so who's the fifth hacker?"

I heard Zack got caught dumpster-diving a Taco Bell. He must be the fifth hacker!

by MN2600 July 25, 2008

fifth wheel

A person (most likely single) who tags along on a double date.

Yeah... Daniel wanted to join our double date. I feel sorry for that fifth wheel.

by mrbrooksshoe May 4, 2011

Fifth Gear Slide

When driving a car with a manual transmission, the fifth gear slide is performed by shifting from fourth to fifth and continuing to move your arm on to your partners knee

I took Amanda out for drinks last night, on the way home I got to finger her. All thanks to the fifth gear slide.

by korozion November 14, 2006

Fifth Person

Created by comedian Demetri Martin,
it usually starts
"I heard from this guy who told somebody"

In a Fifth Person book...
I heard from this guy who told somebody that Demetri Martin is a great comedian!

by Hershel Krustofski April 30, 2008