An atypical 49ers fan who tries to make himself/herself feel better by dissing other teams. They have extreme difficulty accepting reality, and often mistake past trophies for present-day success. They tend to fall back on general over-indulgence to compensate for their teams’ overall lack of awesomeness.

Niner Douches can typically be identified by their flashy, yet hideous red and gold apparel, over-grown facial hair (both male and female) and a cockiness that is mainly due to the fact that the 49ers are a sub-par team…At best.
Look at that drunk bastard in the Frank Gore jersey hitting on that ugly chick…He is a total Niner Douche.
by TD-Gal September 22, 2009
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A person who is not very bright but intelligent enough to feed himself and put on his own clothes. The names derives from being 3 cards short of a full 52-card deck.
Don't expect him to be rational. He's a forty-niner at best.
by Slo Joe Jizz October 14, 2010
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Someone who has gotten to level nine on the flash game Curveball. Some think it's imposible to get to LVL 9, but people have.
"Let's play some curveball, I'm a level niner so you'll probably not beat me"
by 3CR January 23, 2006
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-noun
-adverb

1. A woman who associates with or marries a man chiefly for material gain.

2. You know, a gold digger. Informally.

*
<U>Noun part of speech:</U>

"You can't marry her dude she's a fourty niner and you know it."

<U>Adverb part of speech</U>

Tom:
"So that bastards nailin' Darcy full time then... that bitch."

Dick:
"Darcy?"

Tom:
"Yeah that fourty-ninin' slut! She's way too hot for Todd fucking Stevens, millionaire. How long will he last when Darcy meets the attractive version?"
by Gthree November 7, 2009
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Will inevitably crash or fall apart (like the 1929 stock market crash)
Maybe she's popular now, but when she gets to college she'll be a definite twenty-niner.
by paulblartmollcop November 4, 2017
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Anyone out in public during the covid19 outbreak
Yo man wtf are all these "ONE-NINERS"doing at the gas station?

Idk man hopefully they clear out soon so I can grab a 30 rack.
by Grock607 March 20, 2020
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