A throw-up or "throwie" sits between a tag and a bomb in terms of complexity and time investment. It generally consists of a one color outline and one layer of fill-color. Easy-to-paint bubble shapes often form the letters. A throw-up is designed for quick execution, to avoid attracting attention to the writer. Throw-ups are often utilized by writers who wish to achieve a large number of tags while competing with rival artists. Most artists have both a tag and a throw-up that are essentially fixed compared to pieces. It is mostly so because they need to have a recognizable logo for others to identify them and their own individual styles.
So throw up looks like this
This is bubble throw up. Skilled writer can paint it in 40 seconds.
This looks like old school throw up
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