Tripping/Tweaking/Bugging
If one is twigging, they have just said a twig. This logically makes sense, because a twig is skinny and fragile; a twig is hard to support. Thus, it is synonymous to tripping, because if someone is tripping, they have just said something that is crazy, or hard to support.
A cunt who's as skinny as a twig and happens to work on a farm
God, Shirley is such a farm twig, right?
A butt plug that has been dipped in acid, perfect for being shoved up one's behind.
Man, I would sure love to stick an acid twig up Lauren's ass. She's such an uncultured prick.
When one is skinny, yet has muscle and jiggle
Hey man you gain weight?
Yeah dude. I’m now twig thicc bro