A huge cone of marijuana, where the marijuana is stacked above the rim of the cone piece.
Holy shit dude, that cone is a fucking haystack!
by jimbo1z October 19, 2009
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nickname for Patrick Danahy aka the worlds meanest soap box derby racer. One time he ran into a haystack. bam. he is epic.
Yo haystacks wanna bake?

Haystacks, wanna come over and paint my car in Aztec Orange for four weeks?
by calisurferbabe89 June 20, 2010
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The act of sending an lengthy email chain to a recipient with vague directions to "see below" or "please note" without providing further instructions. This forces the recipient to search through a long list of email correspondences in hopes of figuring out what you're referring to (i.e. searching for a needle in a haystack).
"I just received an email from Dan saying 'Please advise'. But there are, like, 50 emails below his. How am I supposed to know what he's referring to?!? UGH! I hate it when he haystacks! I'm going to start haystacking him back just to piss him off."
by indigopolis December 2, 2011
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An unusually large amount of pubic hair on a girl.
When I took this girl's panties off, she had so much pubic hair I thought I was looking at a haystack.
by Tjlazer111 November 10, 2019
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When a man or woman's ass hair is so unruly and long that it tangles and prevents penetration or pooping.
You should've seen Wyatt's haystack last night. My dick got tangled in it.
by Seamypick March 24, 2016
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Joking or fun name for a Hairy Pussy.
Aww yeah! You know she wanted me to jump in that haystack!
by Merk22 July 8, 2006
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