Getting drunk, then high, then awesomely stupid for a period of indeterminable length, but generally must last at least an evening plus all night and some of the morning. Mash-up heads will take anything to increase the length of time to talk nonsense. Evening ends with possible bed wetting episode or discussion about love/drugs/energy/music. Pizza is often ordered the next day.
-Me gonna get mmmmmmmmmmmash-up.

-"Is that Tom over there fucking up his mixes, he sure is a shit deejay."
"Cut him some slack, he is mash-up."

-Look, its my day off tomorrow and I wanna get totally mash-up.

-"Mash up, get me crack up, on the rack up, shut up and smack up, on a track up" Apocryphal song attributed to someone who is mash-up creating a new and awesome track.

-You look mash-up.

-Mum, I got fuckin mash up last night.
by Sunrise Soup May 15, 2010
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He was completely mashed up.
by Alastair November 19, 2003
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A sexual act involving three people whereby a man has intercourse with a women assuming the doggie-style position and a third person (man or women) inserts their hand into the bottom of the women and gives the man a hand-job from the inside.
-how'd you go last night buddy?
-awesome. Got myself a Milwaukee Mash-up after dinner.

-about time!
by Wong Poker September 26, 2017
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When the music paying from two cars sounds like one song.
While driving and listening to house music, the rap lyrics in the car next to me made a perfect traffic mash-up.
by sojaigirl May 1, 2013
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The only terminology that can be called upon when describing someone in a state of no return. (can be used in any situation !!)
Lou: have you seen Juan Carlos's new girlfriend ?
Nat: Yeah .... shame though cause her face is proper mash up !!
by Natalie Jeffers February 18, 2008
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A YouTube Video Mash-up is the combination of multiple sources of videos which usually have no relation with each other, other than a derivative work, often lampooning its component sources or another text. Many mash-up videos are humorous movie trailer parodies, a later genre of mash-ups gaining much popularity. To the extent that mash-ups are 'transformative' of original content, they may find protection from copyright claims under the "fair use" doctrine of U.S. copyright law.
The following (below) are just a few actual examples of YouTube Video Mash-ups that can be found on YouTube:

1. World's Finest Trailer - Batman vs Superman (Michael Keaton vs Christopher Reeve)
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2. Iron Man vs. Transformers Theatrical Trailer
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3. Batman vs Iron Man trailer (Christian Bale vs Robert Downey Jr.)
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4. The Ultimate TV and movie car race. extended version
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5. Psycho Street Hawk vs KITT
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6. Batman vs Blade Trailer (Christian Bale vs Wesley Snipes)
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by The Centurion January 26, 2013
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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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