A lemon-lime flavoured pop that apparently kills sperm cells.
Horny girl: Do u have a condom?

Horny guy: Nope, but I have a mountain dew.
by srb23 December 29, 2006
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A carbonated beverage made by PepsiCo. Highly caffeinated for a soda (55mg per 12oz compared to 80-135mg per 8oz of brewed coffee). Advertised as an "extreme" drink in commercials, with people participating in extreme sports, often grabbing a can with one hand while upside down in mid-air performing an extreme stunt, and chugging it all. Mountain Dew claims a large variety of flavors, in order of creation:
Mountain Dew
Mountain Dew Code Red (Cherry)
Mountain Dew Livewire (Orangish)
Mountain Dew Pitch Black (Grape)
Mountain Dew Baja Blast (Tropical Lime)
Mountain Dew Pitch Black 2 (Sour Grape)
PepsiCo also creates diet flavors of Mountain Dew drinks. Also, there are two drinks marketed as energy drinks:
Mountain Dew AMP
Mountain Dew MDX
AMP is bottled in the classic energy drink style, a slendar aluminum can, while MDX is bottled in a smaller, more unique style of platic bottling. An enjoyment of all Mountain Dew flavors is that each flavor holds the taste and kick of regular Mountain Dew, along with its separate flavor, with the exception of Pitch Black and Pitch Black 2, which arguably don't hold the taste of regular Dew.
"Yo, bro, stop here. We need to pick up some Mountain Dew."
"Yo, for real, thats extreme."
by jparkdzg May 11, 2006
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a slang term for bootleg alcohol. they call it that good ole mountain dew, them that refuse it are few
My unlce mort hes awful short, measures bout 4 feet 2. He thinks he giant when you slip hit a pint of that good ole mountain dew.

Ill hush up my mug if you fill up my jug with that good ole mountain dew
by Phil Horwitz December 21, 2006
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Basically liquid crack in short terms.
Remedy for late studying nights.
Guy #1 Dude lets get some liquid crack!
Guy #2 Oooh what's that?
Guy #1 Mountain Dew of course!
by qwertydude May 19, 2007
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mountain dew = mount-and-do

term in which a bitch must mount a REAL man's dick and pretty much fuck him like theres no tomorrow
by Retrosolja May 28, 2008
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The greatest liquid on this planet and Mars! Especially popular in the south. The flavor is unknown and the first sip is painful and it is pee colored.....It is God's piss1
by pousson November 12, 2007
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