a violent jamaican term, used to describe the insertion of a penis into a vagina..get it? u beat so hard u mash it up...?
1. yo trav! im `bout to mash it up.
2. ayo bumbaclot, lemme mash it up !?
by roz & tesha July 25, 2005
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A trinidadian phrase to usually said AFTER some one comes close to breaking something,it is a form of sarcasm.
person 1) knocks over appliance

Person 2) well mash it up nah.....
by bronte91 January 31, 2009
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A remix made by taking two different songs, usually by 2 seperate artists, and combining them into one.
Closer in da club (Nine Inch Nails: Closer, combined with 50 cents Up in da club)

One Step Closer/99 Problems (Linkin Park: One Step Closer, combined with Jay-z's 99 Problems)
by undergone May 14, 2005
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v. To take elements of two or more pre-existing pieces of music and combine them to make a new song.
n. A song comprised of elements of two or more pre-existing pieces of music.
2. I'm in the middle of mashing-up songs by Tom Jones and Michael Jackson. (verb usage)

1. I'll play my mash-up of Tom Jones and Michael Jackson at the club tomorrow night. (noun usage)
by some1 August 07, 2003
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1. To take 2 completely different types of music and putting them together.

2. To completely destroy, wreck or mutilate.

3. A cacophony of the senses. Adj.
1. eg. Linkin' Park / Jay Z

2. eg. "His face was mash up after that fight".

3. eg. "That song was so mash up it gave me a nose bleed".
by FCB_87 May 10, 2006
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1. The act of mashing up. Getting drunk / high.

2. A term used to describe people associated with such actions, due to them being unable or unwilling to perform usual tasks.
1. wanna have a mash up tonight?
no, im too mashed.

2. you seen mark? he hasnt been in classes all day.
man, that guy is a total mash up.
by Stephen DeVincenzi February 03, 2008
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Opposite to 'Fix up' a saying bought to most people living out side London by Dizzee Rasscal. Mash up in London basically can be applied to anything that is broken/useless/shit
South West Trains should be called South West Mash Up Trains
by Hugh Janus September 16, 2004
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