Actually there are more application in this word, depending on how you use it.
There is a video on Youtube.com about application on "tiu". There are 2 ways that the program taught.
First one is "lau tiu". "Lau" means courting. the application of "lau tiu" is on a person challenging you to a fight ( either by wit of fist). So exmple is " this guy is doing this on purpose to piss you off, he is definitely ' lau tiu'."
The second one is " daei tiu", meaning "deserve the fuck", its more like deserve the punishment. Example of use is " This guy screw up too much, he is definitely 'daei tiu'."