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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When the police come to stop the fete everybody jus start run and the whole place get mash up
by TriniGirl December 4, 2002
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Same meaning as wordmashedword, as in some one who is completely intoxicated.....usually on drugs of any kind beside alcohol.
Don't give him any more, he's mash up!
by Rizladizla July 20, 2003
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1)Someone who is so intoxicated by alcohol that they are unable to master even the simple act of standing up.
2)The act of becoming so intoxicated by alcohol that the simple act of standing up becomes a mighty challenge.
Last night, he was mash up!

I'M MASH UP!!

Let's all get mash up!
by dan258 December 8, 2003
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Irish word talking about a way to cook some spuds by breaking them down. Adopted by Jamaicans to describe breaking up other people's tings.
If he dont bring my weed im gonna mash up im bloodclaat yard
by hairy mo April 18, 2004
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Konnor: You go to that Girl Talk concert? That was off the hook.
Josh: Yah man those Mash Ups were insane!
by KonArtist38 January 1, 2011
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In gaming, the combination of multiple genres in one setting.
Shadowrun: mash-up of cyberpunk and high fantasy
Rifts: mash-up of cyberpunk, high fantasy, horror, post-holocaust, and new-age mysticism
Cthonian Space: mash-up the Cthulhu Mythos with space opera.
by akaramis December 24, 2010
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