When felling a tree, a Tijuana back cut is when you do not cut a notch, just a straight back-cut.

Term only applies when felling entire tree
You don’t need a notch, just give it a Tijuana back-cut
by Morrison Redwing August 21, 2021
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To back can be just defined as to support.
But it can also be slang for pulling out some kind of weaponery like a knife,

this is mostly used by people in Gangs or people involved in the streets.
Examples of to back:
Worker: My chef really backed my proposal for a new toilet.
Rapper: Hella chitter chatter if I back it you be dartin' of ...
Lyric of SL - Gentleman
by Exless November 03, 2020
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An arrogant thing for somebody not originally from a town to say to somebody that really is from the town.
It would be as arrogant and inflammatory for somebody not originally from California or New York to wecome somebody who really was from California or New York as it is for somebody not originally from a town to welcome somebody who really was originally from the town back to the town. When somebody is in their own home or town, they don't need a welcome back from anybody, and they never will.
by VinegarDude August 10, 2021
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A welcome is something you'll never need from anybody when you're home, in your own neighborhood, especially not from someone that isn't even from your neighborhood.
The outsiders were always the first ones to try to welcome back the guy to his own home and neighborhood for some reason. The people that were also from the neighborhood originally weren't overly curious or interested in what the guy was doing, they also weren't the ones always trying to change the neighborhood, that was mostly outsiders or newcomers doing that. Most people originally from there liked things the way they always had been, without needing them to change.
by VinegarDude August 10, 2021
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