hoe-down 

A series of dance-like jumping motions made when a person has just been caught lip-syncing live on national television.

Ashlee heard her own voice singing, even though she wasn't, so she decided to do a hoe-down.

hoe-down by Unidentified February 9, 2005

get down

A certain act that must occur on Friday. The first human being to enlighten us as to the obligatory nature of this act is Rebecca Black, a distinguished artist who lived in the 21st century.

Rebecca Black: Friday, Friday, gotta get down on Friday!!!

First youtuber who heard the song: Oh god, she is so right!

(Everybody agrees, and the video went viral..an unforgettable day for mankind)

get down by HistorianXXV May 2, 2011

dicked down 

to get fucked really hard for a long period of time

I fucked this dude last night, he really got dicked down

dicked down by foxy brown January 4, 2003

system of a down 

when i first heard their cd, it wasnt that great..then i started listening to it again and again and the songs start sounding so good, i think soad is one of the best bands of our time. one thing i love about them is there individual sound, i havent heard any other band that sounds like them.

soad is one of the best bands

system of a down by atticus 10009 November 28, 2003

mow down 

Verb

Pronunciation: mao down

To eat greedily and voraciously. Synonym for "chow down," pronounced so that "mow" rhymes with "chow."

Let me just finish this one thing, then we can go out and just mow down on some sweet Indian food.

mow down by WreckLoose October 23, 2011

let one's hair down

(verb) to relax; to behave informally.

Letcho hair down, dog!

let one's hair down by Fangsta March 18, 2003

nigger down 

The word used when you kill a nigger.
Most commonly used in Halo 2.

No-zoom headshot in the face on the sword guy. Nigger Down!!

nigger down by Matthew Miller and Mike Bilyk May 15, 2006