The act of wearing one's pants low, with their shirt tucked in. To be low and tucked in you must also be wearing long socks and have whatever pants you are wearing tucked into your long socks which are to be pulled up as far as possible. Knee socks and sweatpants are ideal. Being low and tucked in is known to aid in evading cops, running fast as fuck, and keeping your body loose and tight simultaneously.
You: smoking weed*
Police: Come out with your hands up.
You: Come out*
Police: Oh shit theez kids are low and tucked in, fuck my bad, you guys are free to go.

Joe: Holy shit why is christian running like a fucking cheetah?
Zach: Cuz that nigga is low and tucked in.
by zyk May 4, 2014
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