A throw up is a quick graffiti bomb. Usually not the writer's full name. An Unfilled throwie is a hollow. If a throwie is filled its usually a crack-fill(quick back and forth strokes with fill colour).
The term throw up comes from the fact that the bomb is just thrown up on a wall, bus, train, etc very quickly.
When one is fed up with everything in life. This could pertain to the weather, bfs, gfs, friends, school, work ETC.
To feels anxious, or perhaps bored with life, one should utter this phrase as a method of stress relief. To throw up literally means to rid ones self of toxins in the body, in this metaphorical case, life as a whole!
" did you see the exam question?"
"ya im gonna throw up"
"wow im bored, theres nothing to do tonight"
"im gonna throw up!"
"did you get your essay back?"
"no, im gonna throw up!"
"did you talk to max about how u feel?"
"im gonna throw up"
"this weather is brutal!!"
"wanna throw up together?"