Top Definition
1. To get your act together. 2. Don't be so loose
Mary: Sarah you should put your clothes on!
Kelly: Yea, Sarah tighten up!
Sarah: Mary you should stop takin it deep!
Kelly: Yea, Mary tighten up!
by Joe11 June 28, 2006
3 more definitions
Prison slang for "pay attention". Can also be used to tell another inmate to stop goofing off.
"Yo man tighten up! Don't you see what's about to happen?"
by graybar hotel February 09, 2014
To calm down / loosen up. Typically used when someone is overreacting or in general not being chill.
1. Shakira: AY YO SOMEBODY JUS PULLED ON MAH WEAVE!
2. Mike: Tighten up cuz, ain't nobody pulled on yo weave.
by hastyboomalert July 10, 2012
a command from one hallion to the next to brighten him/herself -
Well dog, whats the craic?
Feck all, just dyin here!
Rough nite last nite then?
Aye, it was raw!!!
Quit your cryin and tighten up!!
by patjoe September 27, 2012

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