be tight-arsed or tight-assed(British & Australian, very informal, American, very informal)

to be worried about small details that are not important.

Cambridge International Dictionary of Idioms © Cambridge University Press 1998

Don't ask Jack to get involved, he's so tight-assed and really irritating.
by dulcederonda January 31, 2008
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A rear end that is exceptionally attractive, well-defined, or desirable according to the butt fad of the month.
Tight ass on that boy!
by MissionDoll November 11, 2004
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A small but really nice ass

It's really curvy and you just have lust for it.

Or when a girl just wears really tight skinny jeans that you can see her asscrack through them.
Man christina has such a tight ass in those jeans. I just wanna buttfuck her
by Niceazz September 22, 2009
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A cheap person or a over cautious person. Tight taken from 'Uptight'.
Dude, Macv won't even hace people over cuz he thinks we will make a mess of his house, what a tight ass.
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combination of tight taken from uptight and ass taken from asshole. A tight ass is someone who could be uptight in a negative way.
That cop gave me a bullshit ticket. What a tight ass.
by Drew Gray December 4, 2005
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Someone who has something up their butt. Tight asses generally don't enjoy anything fun, spontanious, or interesting.
Matt: Hey, do you want to come to a party with me tonight? We're going to get so wasted!

Jack: No thanks, what if we get in trouble!

Matt: Whatever. Stop being such a tight ass.
by Missouri March 19, 2008
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A person who watches their nickle and dimes. Want spend allot of money on something when they know the same item cost less some where else. Don't buy unnecessary things they don't need just because it is a good price. NOW, go look up "Cheap Ass".
by Shineon August 17, 2013
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