to get high off marijuana
boy: dude, wanna go blow down?
friend: hell yeahh
by oh what up March 11, 2007

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Top Definition
Basically smoking weed
person 1:ayo nigga u blow down? no homo
weed head:hell yeah every fuckin day
by Yonkers Child December 04, 2007

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verb;
The act of a male squatting atop a male/female and directing his erect penis vertically downwards into the mouth of the other person.
John: "How many squats can you do?"
Richard: "I don't do squats, Crystal lets me do blowdowns"
by Meanace September 01, 2015

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The opposite of explode: to implode
Professor: So, you boil the water in the can and then dip the can in the cold water upside down and the can implodes.
Student: you mean it will BLOW DOWN???!?!?!!111
Professor: ..................................it implodes

Dude! I saw this AWESOME slo-mo car explosion video backwards and things were LITERALLY blowing down!
by …≥0 December 04, 2010

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To break; An antonym to blow up; usually in reference to a computer application not working.
The crappy code that I wrote caused my program to blow down.
by Anonymous Developer March 21, 2007

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a real bummer or bad experience
Oh man I can't believe you ate the last canoli? What a blow down!
by wordman64 April 02, 2006

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