(Noun) A member of the opposite sex (typically female) who is below one's normal standard for engaging in sexual intercourse. Most times this is used to describe a sexual partner the speaker is ashamed of in some way, but still wants to brag about.

Also: Man-Nast, Nast Hunting, NH4L
"Dude, I got some nast last night. It was raw."

"Lets go hunting for nast!"
by NH4L February 18, 2010
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paige nast is the most kickass girl ever. mahalo bitches! lol
by paige November 18, 2004
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nast-disast

nast-disast: compound word (nasty + disaster), adjective, noun.

A word that describes something that is both nasty and and a disaster; disgusting, a stomach churning moment.
'I started puking on myself in front of everyone at the party, I must have looked nast-disast man

'When I went to squeeze some ketchup on my burger the bottle spewed ketchup all over the place, talk about a nast-disast dude'
by Papadakis April 16, 2020
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1. (interjection): "Ick. Nast." - used to express extreme emotions of disgust

Etymology: A compound expression coined by the brother of a young woman who hooked up with douchebag extraordinaire Jon Gosselin. This term utilizes the interjection "ick" followed by "nast", the abbreviated word of "nasty". The pause between the two words emphasizes the extreme emotions conveyed by the speaker, and distinguishes it from the adjectival form (below).

2. (adj.): "ick nast" - disgusting, repugnant; sketchy

Etymology: The interjection evolved semantically to an adjective due to popularization on the internet. It has become common use in the spoken vernacular amongst those who frequent celebrity blogs. The pause between the words has been omitted in this form.
1. (interjection) "I mean, no one wants to hear his sister having sex, let alone with a married dude who's, like, almost twice her age and who has eight kids and a maybe-crazy wife. Ick. Nast."

2. (adj) Dude, that ick nast guy over there with the Ed Hardy shirts, hair plugs and diamond studded earring is hitting on 20-somethings. Shouldn't he be taking care of his 8 kids?
by karm0n July 23, 2009
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something already nasty but is like extra nasty
You got some nasty nast on your shirt.
by aggie June 7, 2006
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1. Exceedes societal norms of acceptable grossness.
Did you see that photo of Amy Winehouse going to rehab?

Yeah, that was mass nast.
by jimmy b and matt e January 22, 2008
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A Nast hole is simply a fairly obvious reference to a nasty ass hole.
I bet her nast hole is a serious waft eye!
by El Cheapo March 17, 2008
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