A fork of Rural Dictionary
Behaving in a cold or unforgiving way due to angst, a hangup or some bogus morality or propriety.
1. He got up tight about me smoochin' with his woman and sulked about it until the wine smoothed things out and we decided the bitch wasn't worth the trouble. 2. The pigs were really up tight about their missing squad car, but Jimmy was no snitch.
to tighten the fuck up. usually followed by a swift blow to the head.
"Fuck tight up, b!"